Steel structure set up green building embodied energy conservation and environmental protection new technology applicationDujiangyan in southwest China's first will Steel Workshop housing, this is the Shanghai baosteel group, relying on scientific and technological innovation, bend force makes the people.
5 & amp; # 8226; 12 wenchuan after the earthquake, the baosteel group in the first time into the disaster area, and provides the value of more than 5000 ten thousand yuan of houses, solve shelter for victims. Today, baosteel, again carries on first startup of the residential construction projects - dujiangyan happiness home from estates, widely used in the scientific and technological achievements, focusing on green, safety, construction of residential area with demonstration significance.
roduction, hand in hand to overcome technical difficulties
Steel structure housingHas the advantage of light deadweight, high strength and good seismic performance, the advantages of the convenient for industrialized production, its energy-saving and ground-saving, recycled, build and dismantle when less pollution to the environment and other characteristics is known by experts as the "green building" of the 21st century. As China's most competitive steel enterprise, in 2005, baosteel in China only the identity of the sole member attended LivingSteel residential steel structure project, at the same time within the scope of the company set up a production, research and development, marketing, strategic planning, etc of senior professionals in the field of special groups, adhere to technology integration project of the main line, with many colleges and universities, research institutes and companies at home and abroad to establish extensive cooperation and common in view of the existing steel structure residence building, structure, enclosure, green energy-saving technology problems, such as for in-depth research.
Beijing cyber company is baosteel group long-term partners, the steel structure housing "SanBan" steel structure housing development problem has always been one of the main bottlenecks, both sides confirmed the "pu light-gauge steel composite wall" and "light steel, masonry composite wall" two kinds of new light weight wall system of cooperative research, for the first time the introduction of foreign advanced concept of palisade, wall materials and adopt flexible connection between steel structure of main body, to avoid the wall material destruction collapsed during the earthquake occurrence.
Tongji university, xian building university of science and technology, tianjin university and other well-known colleges and universities also is the "brain" of baosteel group, such as cooperation with tongji university has carried on the steel structure housing the application of the model, building comfortable performance; In the steel structure housing structure system; Steel structure housing the whole project life cycle, etc.
New technology application of energy conservation and environmental protection
QinZhuanHanWa traditional housing encountered after the earthquake, abandoned brick and tile scarred hard to disposal, has become the environmental hazards, and the new steel structure because of its advantage of 100% recyclable and highly regarded. Baosteel group in the process of research and development of steel structure residence pays attention to the application of new technology, steel structure residential housing new technology applied in actual engineering, improve the housing economy, comfort and safety, and meet the needs of residents of social, environmental, and economic. In lateral resistance system, component nodes and three key technical areas wall panel system has made effective progress, manifests the characteristic of the energy conservation and environmental protection.
Clear "small earthquakes, the vibration can be repair, flame to fail", is the baosteel to steel structure residential construction safety commitment. In order to ensure the seismic coefficient of the residence, baosteel group, research and development a new type of lateral force resistant system - with seam steel plate shear wall, this system has the flexible layout, adjustable stiffness and excellent performance, etc. Baosteel group in Japan is based on existing results, stiffening, bolt structure, from the edges of the slit mode, the connection position and other aspects of the improvements and innovations on the construction, through the "localization" research and application of the developed economy applicable, excellent performance, and suitable for China's national conditions of new type belt joint technology of steel plate shear wall. After two a 1:1 model seismic experiment, has proved its excellent performance. At present, the group is actively preparing the technology at the ministry of construction of the appraisal and the involved key technology patents, and intends to apply it to the steel structure residential area in dujiangyan.
Is construction site noise it is difficult to avoid the "stubborn", to effectively avoid overhead welding on site, baosteel group has developed a new of cold bending square steel tube columns and H type steel beam new type outer casing connection node technology, it adopts bolt connection method, figuratively speaking like a board type furniture, "instant" can be performed, with convenient transportation advantages and reduce labor costs, installation fast, at the same time, the technology also has higher bearing capacity and stiffness, good seismic performance. Now fill the domestic blank, reached the international advanced level of technology in the dujiangyan post-disaster reconstruction community play an important role.
"Better steel, better environment, better life", this is the upcoming September 26-28, the third annual meeting, the theme of the baosteel Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html housing and the sustainable development will become the important content of the annual meeting.
The steel structure housing industrialization business opportunities to attract
http://jingtasteel.blogspot.com/2013/04/the-steel-structure-housing.html
2013年4月22日星期一
Pudong airport west freight area public goods station steel structure
Pudong airport west freight area public goods station Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html completed"Daily economic news" yesterday learned that, after thousands of builders of 8 months, pudong international airport by west freight area public goods station has early show high precision and has finished all more than 7000 tonssteel structure engineering.
It is understood that the public goods station is located in a west freight area of pudong airport is under construction, is a collection of full automation and computer control of large cargo. Project covers an area of 550000 square meters, construction area of 410000 square meters, construction area of 190000 square meters, designed annual cargo handling capacity of 1.2 million tons. In the first half of next year will be along with pudong airport second terminal building and third runway in use, the pudong airport passenger and cargo security capacity will reach 60 million passengers and 60 million tons.
udong airport west freight area engineering as to meet the future freight volume growth in pudong airport infrastructure, is an important project of building Shanghai international shipping hub. The west side of the freight area is located in the new third runway, covers an area of 8.4 square kilometers, will build airport cargo terminal, base airlines cargo and transport center, with 18 cargo aircraft.
Is expected in 2010 west freight area cargo handling capacity will reach 1.15 million tons, 2.45 million tons in 2015. Last week, is located in the pudong airport west air freight of UPS in the pudong airport transit center has officially started, which was completed in the third quarter next year.
Completed and put into use in pudong airport west freight area, will become the largest air cargo terminal in mainland China, pudong airport freight volume is expected to rank among the world top three at the airport.
According to the latest statistics show that by the ACI pudong airport freight volume in the first quarter of this year's global ranking is rising again, a top the list of the world airport. 5. Reached 1.1297 million tons in the first half of this year, while the pudong airport's traffic volume, up 16.3% from a year earlier. Pudong airport freight volume this year is expected to complete 2.4 million tons.
Steel structure: super-tall large-span special modelling into the development direction
http://jingtasteel.blogspot.com/2013/04/steel-structure-super-tall-large-span.html
It is understood that the public goods station is located in a west freight area of pudong airport is under construction, is a collection of full automation and computer control of large cargo. Project covers an area of 550000 square meters, construction area of 410000 square meters, construction area of 190000 square meters, designed annual cargo handling capacity of 1.2 million tons. In the first half of next year will be along with pudong airport second terminal building and third runway in use, the pudong airport passenger and cargo security capacity will reach 60 million passengers and 60 million tons.
udong airport west freight area engineering as to meet the future freight volume growth in pudong airport infrastructure, is an important project of building Shanghai international shipping hub. The west side of the freight area is located in the new third runway, covers an area of 8.4 square kilometers, will build airport cargo terminal, base airlines cargo and transport center, with 18 cargo aircraft.
Is expected in 2010 west freight area cargo handling capacity will reach 1.15 million tons, 2.45 million tons in 2015. Last week, is located in the pudong airport west air freight of UPS in the pudong airport transit center has officially started, which was completed in the third quarter next year.
Completed and put into use in pudong airport west freight area, will become the largest air cargo terminal in mainland China, pudong airport freight volume is expected to rank among the world top three at the airport.
According to the latest statistics show that by the ACI pudong airport freight volume in the first quarter of this year's global ranking is rising again, a top the list of the world airport. 5. Reached 1.1297 million tons in the first half of this year, while the pudong airport's traffic volume, up 16.3% from a year earlier. Pudong airport freight volume this year is expected to complete 2.4 million tons.
Steel structure: super-tall large-span special modelling into the development direction
http://jingtasteel.blogspot.com/2013/04/steel-structure-super-tall-large-span.html
2013年4月17日星期三
Pudong airport west freight area public goods station steel structure
Pudong airport west freight area public goods station steel structure completed"Daily economic news" yesterday learned that, after thousands of builders of 8 months, pudong international airport by west freight area public goods station has early show high precision and has finished all more than 7000 Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html engineering.
It is understood that the public goods station is located in a west freight area of pudong airport is under construction, is a collection of full automation and computer control of large cargo. Project covers an area of 550000 square meters, construction area of 410000 square meters, construction area of 190000 square meters, designed annual cargo handling capacity of 1.2 million tons. In the first half of next year will be along with pudong airport second terminal building and third runway in use, the pudong airport passenger and cargo security capacity will reach 60 million passengers and 60 million tons.
udong airport west freight area engineering as to meet the future freight volume growth in pudong airport infrastructure, is an important project of building Shanghai international shipping hub. The west side of the freight area is located in the new third runway, covers an area of 8.4 square kilometers, will build airport cargo terminal, base airlines cargo and transport center, with 18 cargo aircraft.
Is expected in 2010 west freight area cargo handling capacity will reach 1.15 million tons, 2.45 million tons in 2015. Last week, is located in the pudong airport west air freight of UPS in the pudong airport transit center has officially started, which was completed in the third quarter next year.
Completed and put into use in pudong airport west freight area, will become the largest air cargo terminal in mainland China, pudong airport freight volume is expected to rank among the world top three at the airport.
According to the latest statistics show that by the ACI pudong airport freight volume in the first quarter of this year's global ranking is rising again, a top the list of the world airport. 5. Reached 1.1297 million tons in the first half of this year, while the pudong airport's traffic volume, up 16.3% from a year earlier. Pudong airport freight volume this year is expected to complete 2.4 million tons.
Jinan Olympic sports center stadiumsteel structure engineeringTo complete
http://jingtasteel.blogspot.com/2013/04/jinan-olympic-sports-center.html
It is understood that the public goods station is located in a west freight area of pudong airport is under construction, is a collection of full automation and computer control of large cargo. Project covers an area of 550000 square meters, construction area of 410000 square meters, construction area of 190000 square meters, designed annual cargo handling capacity of 1.2 million tons. In the first half of next year will be along with pudong airport second terminal building and third runway in use, the pudong airport passenger and cargo security capacity will reach 60 million passengers and 60 million tons.
udong airport west freight area engineering as to meet the future freight volume growth in pudong airport infrastructure, is an important project of building Shanghai international shipping hub. The west side of the freight area is located in the new third runway, covers an area of 8.4 square kilometers, will build airport cargo terminal, base airlines cargo and transport center, with 18 cargo aircraft.
Is expected in 2010 west freight area cargo handling capacity will reach 1.15 million tons, 2.45 million tons in 2015. Last week, is located in the pudong airport west air freight of UPS in the pudong airport transit center has officially started, which was completed in the third quarter next year.
Completed and put into use in pudong airport west freight area, will become the largest air cargo terminal in mainland China, pudong airport freight volume is expected to rank among the world top three at the airport.
According to the latest statistics show that by the ACI pudong airport freight volume in the first quarter of this year's global ranking is rising again, a top the list of the world airport. 5. Reached 1.1297 million tons in the first half of this year, while the pudong airport's traffic volume, up 16.3% from a year earlier. Pudong airport freight volume this year is expected to complete 2.4 million tons.
Jinan Olympic sports center stadiumsteel structure engineeringTo complete
http://jingtasteel.blogspot.com/2013/04/jinan-olympic-sports-center.html
2013年4月14日星期日
Construction steel structure processing and coating
Construction steel structure processing and coating coating technologyConstruction steel structure processing and paint coating, sometimes encountered varieties to coating material can not sure, will cause the product touch paint coating process management; And because of construction steel structure without proper bottom paint variety, make the overall protective effect of the composite coating were affected.
1 construction steel structure assembly line homework
Steel structure processing enterprise assembly line in addition to processing ability difference, affect the service life of the coating have shot blasting surface treatment quality and the time interval of bottom paint coating.
Shipbuilding industry with inorganic zinc primer workshop as steel shot blasting derusting treatment after maintenance coating, then through cutting, forming, welding into profiles. Due to the maintenance of bottom paint coating is suitable for forming and welding coating operations, can meet the technological requirements of before, finalize the design product.
Construction steel structure processing more varieties of coating material change factors in the operation, processing, such as the follow-up process progress slow, due to the steel surface after treatment in the presence of oxygen in the air easy to rusty, placed under the environmental conditions of the relative humidity of 85% or less is only allowed 4 h, or less often in the bottom coating construction can't keep up with the rusty with the passing of time, have to make a second cleaning.
Formation of corrosion pits in shot blasting treatment manual surface processing to meet the St3 level, and the power tool cleaning work is big and the cost is high, because this kind of surface treatment does not affect the coating quality, often has greatly reduce the service life of construction steel structure.
2 construction steel structure coating material
2.1 paint variety adaptability of steel cleaning standards
Epoxy, epoxy zinc-rich) coating surface treatment to demand higher cleanliness, manual cleaning shall not be lower than St3 level. St2 level is only suitable for oily paint, alkyd paint coating.
2.2 construction steel components are reserved bolt junction surface coating requirements
Bolt junction surface is slip resistant requirement, and organic coating surface is smooth, does not have the function of slip resistance. Construction Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html product quality acceptance standard connection friction surface must be shot or grit blasting, coating of organic coating must be removed by mistake. After the coating process in the forming, blasting derusting, after processing to prevent the reserved surface coating and surface treatment of steel by mistake after coating, etc., should pay attention to in implementing.
3 construction steel members precoating end of inorganic zinc rich paint is feasible
3.1 maintenance of bottom paint coating of mature experience
Shipyards steel plate shot blasting derusting operation line is equipped with maintenance bottom paint spraying and drying process, paint coating and derusting short time interval,
Note: for fit; Delta is a bit not suitable for; X is not suitable for.
Steel surfaces is in active state, timely paint coating adhesion and antirust performance are very good, 20 microns thick workshop shop primer can adapt to the requirement of 6 months above slipway cycle rust, process design and technology is mature and reliable.
Construction steel structure manufacturing enterprise scale and capital investment and the shipyard difference is big, because of construction steel structure production front processes lack (compared with the shipyard), must increase the order quantity after. If considering a bit more investment funds, have the ability to shot blasting derusting, weld can reduce the secondary cleaning; Has a variety of bottom coating conditions to choose matching scheme.
3.2 management of construction steel structure coating technology
Steel processing and coating production line due to the equipment model is different, blanking, punching, welding and surface treatment cleaning sequence has the difference.
3.2.1 the steel surface treatment - forming - paint coating
Companies such as light steel surface treatment equipment simple, immediately is cutting, punching, welding, coating of coating and shot blasting derusting interval time long, or even exceed the maximum allowable time interval, only complete sliding friction resistance of the surface treatment requirement, the consequences are mostly in the bottom coating corrosion coating under the condition of base level, this is coating early rusty.
3.2.2 forming to rust removal, paint coating
Such companies have steel profiles of cutting, welding, surface treatment equipment, paint coating and shot blasting derusting short time interval, coating protective effect is relatively better.
According to the management requirements of the coating technology, coating of coating and surface treatment interval time more short more good, the steel surface after shot peening to minimize air exposed. After surface treatment with precoating increased maintenance base coating. And precoat bottom coating workshop is suitable for coated welding maintenance base coating. For class a craft, after coating, the coating surface retain qualified as long as the coefficient of friction, can completely molding components to meet the demand of the coating process. For class b process, increase the precoating after rust removal, may help reduce exposure to coating quality. The bottom coating maintenance coating, cost is not much, but because of the durability of good reflect the economic benefit is obvious.
3.3 the durability of the coating
3.3.1 factors affecting the durability of coating
Rust and corrosion protective coating technology ([day] sato? Jing) the steel surface derusting quality affect coating durability levels as close to 50%, as shown in table 2.
3.3.2 rainfall distribution on 10-12 cleanness of surface treatment and coating durability
The rust and corrosion protective coating technology ([day] sato? Jing) with the experimental data shows that the bottom of the cleanliness of all kinds of surface treatment coating durability, as shown in figure 2.
Cleanness of surface treatment of oily coating with red lead derusting paint coating is affected, especially for synthetic resin coating of a class, grade Sa3 differ with the durability of Sa2 level 4 times.
4 construction steel component bottom coating of inorganic zinc rich coating workshop maintenance applicability
4.1 inorganic zinc rich bottom coating maintenance of mechanical processing adaptability
4.4.1 coated cutting and welding performance
Welding performance is coating product maintenance at the end of the testing project. Workshop floor paint coating thin, low toxicity, resistance to high temperature of 450 ℃. Once the coating damage under high temperature, still do not break the protection of zinc on iron metal materials, and spread the area is small, the secondary cleaning, small amount of work will not affect the welding strength, and is suitable for coated cutting. But inorganic zinc rich paint after curing film, unlike general organic coating paint remover removal on easily.
4.1.2 coating of varieties of form a complete set
Inorganic zinc rich paint, epoxy, polyurethane varieties and good compatibility, and vinyl and rubber varieties by epoxy micaceous iron oxide layer coating as a transition. Alkyd surface coating class is a traditional varieties, although not directly in the zinc rich coating surface coating, but suitable for epoxy micaceous iron oxide coating transition layer of the coating.
4.2 with alkyd coating epoxy micaceous iron oxide intermediate coating
Inorganic zinc rich coatings have anti slip function, suitable for bolted friction surface coating, and assigned to the junction surface rust, and the quality of the coating in the long time stability. Inorganic zinc rich class bottom coating, though there are kinds of form a complete set of coating, but don't type suitable for alkyd coating, surface coating is oily coatings under the action of ultraviolet oxidation generating aldehyde compounds, alkyd resin free acidic materials such as phthalic anhydride, react with zinc metal to produce zinc salt, pushing oil resin coating layer. Habit with alkyd resins for surface coatings, again with epoxy micaceous iron oxide intermediate coating makes the transition, both are cut off from the activity of zinc metal, and for coating provides an ideal rough coating surface.
5 conclusion
5.1 steel by surface treatment, must be covered in a short time priming paint, and to ensure that the thickness of the bottom coating, prevent rusty.
5.2 inorganic zinc-rich coating maintenance good rust resistance, and have anti slip function, suitable for coating of construction steel components. Welding and molding process after the inorganic zinc rich paint coating, only in the weld part need to secondary cleaning, and then directly coating epoxy micaceous iron oxide intermediate coating or other coating antirust paint.
5.3 steel anti-corrosion coating paint varieties appropriate chooses inorganic zinc rich paint, friction surface by covering layer coating and surface coating, before construction craft is advanced. Though the process of coating cost increase, but can ensure the quality of steel structure rust protection, the existing coating process to improve the coating service life is 2 ~ 4 times.
China steel structure association four three times in the enlarged meeting
http://jingtasteel.blogspot.com/2013/04/china-steel-structure-association-four.html
1 construction steel structure assembly line homework
Steel structure processing enterprise assembly line in addition to processing ability difference, affect the service life of the coating have shot blasting surface treatment quality and the time interval of bottom paint coating.
Shipbuilding industry with inorganic zinc primer workshop as steel shot blasting derusting treatment after maintenance coating, then through cutting, forming, welding into profiles. Due to the maintenance of bottom paint coating is suitable for forming and welding coating operations, can meet the technological requirements of before, finalize the design product.
Construction steel structure processing more varieties of coating material change factors in the operation, processing, such as the follow-up process progress slow, due to the steel surface after treatment in the presence of oxygen in the air easy to rusty, placed under the environmental conditions of the relative humidity of 85% or less is only allowed 4 h, or less often in the bottom coating construction can't keep up with the rusty with the passing of time, have to make a second cleaning.
Formation of corrosion pits in shot blasting treatment manual surface processing to meet the St3 level, and the power tool cleaning work is big and the cost is high, because this kind of surface treatment does not affect the coating quality, often has greatly reduce the service life of construction steel structure.
2 construction steel structure coating material
2.1 paint variety adaptability of steel cleaning standards
Epoxy, epoxy zinc-rich) coating surface treatment to demand higher cleanliness, manual cleaning shall not be lower than St3 level. St2 level is only suitable for oily paint, alkyd paint coating.
2.2 construction steel components are reserved bolt junction surface coating requirements
Bolt junction surface is slip resistant requirement, and organic coating surface is smooth, does not have the function of slip resistance. Construction Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html product quality acceptance standard connection friction surface must be shot or grit blasting, coating of organic coating must be removed by mistake. After the coating process in the forming, blasting derusting, after processing to prevent the reserved surface coating and surface treatment of steel by mistake after coating, etc., should pay attention to in implementing.
3 construction steel members precoating end of inorganic zinc rich paint is feasible
3.1 maintenance of bottom paint coating of mature experience
Shipyards steel plate shot blasting derusting operation line is equipped with maintenance bottom paint spraying and drying process, paint coating and derusting short time interval,
Note: for fit; Delta is a bit not suitable for; X is not suitable for.
Steel surfaces is in active state, timely paint coating adhesion and antirust performance are very good, 20 microns thick workshop shop primer can adapt to the requirement of 6 months above slipway cycle rust, process design and technology is mature and reliable.
Construction steel structure manufacturing enterprise scale and capital investment and the shipyard difference is big, because of construction steel structure production front processes lack (compared with the shipyard), must increase the order quantity after. If considering a bit more investment funds, have the ability to shot blasting derusting, weld can reduce the secondary cleaning; Has a variety of bottom coating conditions to choose matching scheme.
3.2 management of construction steel structure coating technology
Steel processing and coating production line due to the equipment model is different, blanking, punching, welding and surface treatment cleaning sequence has the difference.
3.2.1 the steel surface treatment - forming - paint coating
Companies such as light steel surface treatment equipment simple, immediately is cutting, punching, welding, coating of coating and shot blasting derusting interval time long, or even exceed the maximum allowable time interval, only complete sliding friction resistance of the surface treatment requirement, the consequences are mostly in the bottom coating corrosion coating under the condition of base level, this is coating early rusty.
3.2.2 forming to rust removal, paint coating
Such companies have steel profiles of cutting, welding, surface treatment equipment, paint coating and shot blasting derusting short time interval, coating protective effect is relatively better.
According to the management requirements of the coating technology, coating of coating and surface treatment interval time more short more good, the steel surface after shot peening to minimize air exposed. After surface treatment with precoating increased maintenance base coating. And precoat bottom coating workshop is suitable for coated welding maintenance base coating. For class a craft, after coating, the coating surface retain qualified as long as the coefficient of friction, can completely molding components to meet the demand of the coating process. For class b process, increase the precoating after rust removal, may help reduce exposure to coating quality. The bottom coating maintenance coating, cost is not much, but because of the durability of good reflect the economic benefit is obvious.
3.3 the durability of the coating
3.3.1 factors affecting the durability of coating
Rust and corrosion protective coating technology ([day] sato? Jing) the steel surface derusting quality affect coating durability levels as close to 50%, as shown in table 2.
3.3.2 rainfall distribution on 10-12 cleanness of surface treatment and coating durability
The rust and corrosion protective coating technology ([day] sato? Jing) with the experimental data shows that the bottom of the cleanliness of all kinds of surface treatment coating durability, as shown in figure 2.
Cleanness of surface treatment of oily coating with red lead derusting paint coating is affected, especially for synthetic resin coating of a class, grade Sa3 differ with the durability of Sa2 level 4 times.
4 construction steel component bottom coating of inorganic zinc rich coating workshop maintenance applicability
4.1 inorganic zinc rich bottom coating maintenance of mechanical processing adaptability
4.4.1 coated cutting and welding performance
Welding performance is coating product maintenance at the end of the testing project. Workshop floor paint coating thin, low toxicity, resistance to high temperature of 450 ℃. Once the coating damage under high temperature, still do not break the protection of zinc on iron metal materials, and spread the area is small, the secondary cleaning, small amount of work will not affect the welding strength, and is suitable for coated cutting. But inorganic zinc rich paint after curing film, unlike general organic coating paint remover removal on easily.
4.1.2 coating of varieties of form a complete set
Inorganic zinc rich paint, epoxy, polyurethane varieties and good compatibility, and vinyl and rubber varieties by epoxy micaceous iron oxide layer coating as a transition. Alkyd surface coating class is a traditional varieties, although not directly in the zinc rich coating surface coating, but suitable for epoxy micaceous iron oxide coating transition layer of the coating.
4.2 with alkyd coating epoxy micaceous iron oxide intermediate coating
Inorganic zinc rich coatings have anti slip function, suitable for bolted friction surface coating, and assigned to the junction surface rust, and the quality of the coating in the long time stability. Inorganic zinc rich class bottom coating, though there are kinds of form a complete set of coating, but don't type suitable for alkyd coating, surface coating is oily coatings under the action of ultraviolet oxidation generating aldehyde compounds, alkyd resin free acidic materials such as phthalic anhydride, react with zinc metal to produce zinc salt, pushing oil resin coating layer. Habit with alkyd resins for surface coatings, again with epoxy micaceous iron oxide intermediate coating makes the transition, both are cut off from the activity of zinc metal, and for coating provides an ideal rough coating surface.
5 conclusion
5.1 steel by surface treatment, must be covered in a short time priming paint, and to ensure that the thickness of the bottom coating, prevent rusty.
5.2 inorganic zinc-rich coating maintenance good rust resistance, and have anti slip function, suitable for coating of construction steel components. Welding and molding process after the inorganic zinc rich paint coating, only in the weld part need to secondary cleaning, and then directly coating epoxy micaceous iron oxide intermediate coating or other coating antirust paint.
5.3 steel anti-corrosion coating paint varieties appropriate chooses inorganic zinc rich paint, friction surface by covering layer coating and surface coating, before construction craft is advanced. Though the process of coating cost increase, but can ensure the quality of steel structure rust protection, the existing coating process to improve the coating service life is 2 ~ 4 times.
China steel structure association four three times in the enlarged meeting
http://jingtasteel.blogspot.com/2013/04/china-steel-structure-association-four.html
2013年4月11日星期四
"The expo center" steel structure
"The expo center" steel structure hoisting finished more than halfermanent building, as the Shanghai world expo "one axis and four pavilions", the expo center, theme pavilions, expo axis avenue pavilion and the performing arts center has started in an all-round way. Yesterday, the Shanghai construction QiJian company said, "one of the four pavilions", first into the steel structure hoisting phase of the project - "the expo center" project, after more than 750 builders more than 3 months continuous fight, has begun to take shape. Altogether 24000 tonnes of steel structure hoisting has been finished more than half.
"The expo center is the largest expo park in ShanghaiSteel structure constructionThe project. Among them "the expo center" west end is on the seventh layer of steel structure hoisting, is expected to realize the steel cap at the end of September this year; East is on the fourth layer of the Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html hoisting, will also top in the middle of October this year. At the same time, the basement of the pipe installation is in full swing, curtain wall installation preparation is also grasp the works.
After the completion of the expo center, its operation command center, expo during the world expo will shoulder the celebration conference center, press center, and the altar of activities, and other functions.
Method for numerical control
http://jingtasteel.blogspot.com/2013/04/method-for-numerical-control.html
"The expo center is the largest expo park in ShanghaiSteel structure constructionThe project. Among them "the expo center" west end is on the seventh layer of steel structure hoisting, is expected to realize the steel cap at the end of September this year; East is on the fourth layer of the Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html hoisting, will also top in the middle of October this year. At the same time, the basement of the pipe installation is in full swing, curtain wall installation preparation is also grasp the works.
After the completion of the expo center, its operation command center, expo during the world expo will shoulder the celebration conference center, press center, and the altar of activities, and other functions.
Method for numerical control
http://jingtasteel.blogspot.com/2013/04/method-for-numerical-control.html
2013年4月9日星期二
From half timber to steel structure
From half timber to steel structure and high-rise steel structure building in our country development into the fast lane"Should have hundreds of feet high, hand can pick the stars", is a tang dynasty poet li bai "night ShanSi" in a sentence, it describes the art of people with lofty ideal tower to touch the sky.
Ancient tower building is famous in our country, from the eastern han dynasty to the qing dynasty to build tens of thousands of wooden structure, brick, stone, wood and composite structure of the pagoda, the existing 25000 seats. Our ancestors at the time of the material conditions, with clever wit, superb technology, using different materials, utmost ground build top space. It is no exaggeration to say: the Chinese nation has a long history of construction of the high-rise building.
In the progress of science and technology at the same time, the industrial revolution over the past century European and American countries developing high-rise buildings, high-rise steel structure www.jingtabuilding.com building has made great development. Particularly in the United States steel structure building has 110 years of history, as early as 1883 a steel structure building in Chicago. After the second world war due to rising land values and rapid population growth, and the study of tall building structure system of constant progress, the development of computing technology and construction technology level unceasing enhancement, the high-rise construction rapid development. In tall building in the use of reinforced concrete structure has been questioned at the same time, high strength steel, refractory steel arises at the historic moment. In tall building using part of steel structure or theoretical research and design of full steel structure construction technology matures, greatly promote the construction process of high-rise steel structure building all over the world.
Since the 21st century, along with our country urbanization process is accelerated, all around the country comprehensive strength of science and technology promotion, especially the development of iron and steel industry, building materials, the rise of the high-rise buildings everywhere like mushrooms. Super-tall buildings become a landmark of a city, especially in recent years, some large and medium cities of the skyline in constant rise. People increasingly recognize that high-rise Steel Structure Workshop building is a national and regional economic prosperity, material industry level, the symbol of the progress of science and technology. High-rise steel structure building in our country since reform and opening up for 20 years, and accumulated much experience in design and construction, and have compiled by China "technical specification for steel structure of tall buildings".
From our country built high-rise steel structure building, Shanghai jinmao tower is a high-rise steel structure building with Chinese traditional style. Jin MAO tower, fully embodies the Chinese traditional culture and the integration of modern high science and technology, the characteristics of both the extension and development of Chinese ancient tower building, and the images of Shanghai style architecture. Currently under construction in Shanghai world financial tower height and has new breakthrough, builders are constantly refresh record. Thus can see, China's Steel Structure Warehouse http://www.jingtabuilding.com/steel-structure-workshop.html manufacturing industry is faced with a booming, rapid development of a better future.
Village bridge steel structure as a whole body float towingOn August 17
http://jingtasteel.blogspot.com/2013/04/village-bridge-steel-structure-as-whole.html
Ancient tower building is famous in our country, from the eastern han dynasty to the qing dynasty to build tens of thousands of wooden structure, brick, stone, wood and composite structure of the pagoda, the existing 25000 seats. Our ancestors at the time of the material conditions, with clever wit, superb technology, using different materials, utmost ground build top space. It is no exaggeration to say: the Chinese nation has a long history of construction of the high-rise building.
In the progress of science and technology at the same time, the industrial revolution over the past century European and American countries developing high-rise buildings, high-rise steel structure www.jingtabuilding.com building has made great development. Particularly in the United States steel structure building has 110 years of history, as early as 1883 a steel structure building in Chicago. After the second world war due to rising land values and rapid population growth, and the study of tall building structure system of constant progress, the development of computing technology and construction technology level unceasing enhancement, the high-rise construction rapid development. In tall building in the use of reinforced concrete structure has been questioned at the same time, high strength steel, refractory steel arises at the historic moment. In tall building using part of steel structure or theoretical research and design of full steel structure construction technology matures, greatly promote the construction process of high-rise steel structure building all over the world.
Since the 21st century, along with our country urbanization process is accelerated, all around the country comprehensive strength of science and technology promotion, especially the development of iron and steel industry, building materials, the rise of the high-rise buildings everywhere like mushrooms. Super-tall buildings become a landmark of a city, especially in recent years, some large and medium cities of the skyline in constant rise. People increasingly recognize that high-rise Steel Structure Workshop building is a national and regional economic prosperity, material industry level, the symbol of the progress of science and technology. High-rise steel structure building in our country since reform and opening up for 20 years, and accumulated much experience in design and construction, and have compiled by China "technical specification for steel structure of tall buildings".
From our country built high-rise steel structure building, Shanghai jinmao tower is a high-rise steel structure building with Chinese traditional style. Jin MAO tower, fully embodies the Chinese traditional culture and the integration of modern high science and technology, the characteristics of both the extension and development of Chinese ancient tower building, and the images of Shanghai style architecture. Currently under construction in Shanghai world financial tower height and has new breakthrough, builders are constantly refresh record. Thus can see, China's Steel Structure Warehouse http://www.jingtabuilding.com/steel-structure-workshop.html manufacturing industry is faced with a booming, rapid development of a better future.
Village bridge steel structure as a whole body float towingOn August 17
http://jingtasteel.blogspot.com/2013/04/village-bridge-steel-structure-as-whole.html
2013年4月6日星期六
ShengYunHui stadium steel structure hoisting "century lotus""Century lotus shape
ShengYunHui stadium steel structure hoisting "century lotus""Century lotus shape.
Yesterday, the reporter comes to ShengYunHui "lotus" of the century, one of the main stadium sports center, I saw a ring
Steel structure lie across more than 20 meters high in the air.
Construction personnel present tells a reporter, this is the hoisting of steel structure. In order to ensure the hoisting of steel structure
, assembling accuracy, contractor chose 4 nodes tested pre assembled.
At present, the test section pre assembled has ended, the construction will officially lifting of steel structure in recently. "Century
"Overall engineering are expected to be completed in June next year.
Test section pre assembled end smoothly
According to center Liang Kai ShengYunHui venue construction way, at present, the "lotus" of the century the civil structure has been completed
,steel structure engineeringAlready began late last month. Because of the lotus, "" century steel structure consists of two" pressure ring
Between two ring ", more than 20 meters apart.
Therefore, in order to ensure the accuracy of the two ring is assembled, the contractor in accordance with the 1:1 ratio of two ring, in the first place
Selected the four nodes to assemble of test section. This is the reporter at the scene of the site to see more than 20 meters high
circularsteel frame.
"Through the pre assembled, can inspect each node can perfectly, the size is right."
Liang Kai tao says, pre assembled in the test process, the contractor only local fine-tuning, assembling accuracy
High.
At present, the test section is assembled. Construction of founder uninstalling test section. "The lotus" Steel Structure Building
Officially lifting will be started recently. Due to the steel structure assembly should be carried out at high altitude, node is more, only big nodes
There are 80, therefore, in order to ensure the assembly accuracy, the venue construction detection assembly center invited a third party
Size. To be crane steel structure should be promoted to the position, the third party will be on the size, location
After check, confirm and correct, to allow the contractor to make a final welding.
The wholesteel structure engineeringOn October 10, is expected to complete.
Lotus framework under pressure
According to understand, "century lotus" the 3700 - ton steel structure, is divided into two "pressure ring. Among them"
ressure ring "on high from the ground 49.5 meters, a diameter of 318 meters, the installation on large inclined column;" Press the ring"
About 29 meters high from the ground, a diameter of 270 meters. Press on the "ring" and "press ring" between, CHS
Connection, form "lotus" framework.
Will be installed on two ring, cable membrane structure. It is reported, "century lotus" roof of the white film from France
Import, covers area of 58000 square meters, covers an area of more than 70000 square meters, the weight of about 2000 tons.
Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html and cable membrane roofing system constitutes the "lotus" of the century. "So heavy roofing system, to all
By 40 's lotus root large oblique pillars. "
Construction personnel, told reporters that by their preliminary calculation, each big inclined column will take about more than 400 tons
ressure. In order to improve the bearing capacity of large inclined column, contractor in large inclined column installed wire, breakdown pressure
.
Source: guangzhou daily
Steel structure will benefit from the real estate regulation and controlbuildingsteel structure
http://jingtasteel.blogspot.com/2013/04/steel-structure-will-benefit-from-real.html
Yesterday, the reporter comes to ShengYunHui "lotus" of the century, one of the main stadium sports center, I saw a ring
Steel structure lie across more than 20 meters high in the air.
Construction personnel present tells a reporter, this is the hoisting of steel structure. In order to ensure the hoisting of steel structure
, assembling accuracy, contractor chose 4 nodes tested pre assembled.
At present, the test section pre assembled has ended, the construction will officially lifting of steel structure in recently. "Century
"Overall engineering are expected to be completed in June next year.
Test section pre assembled end smoothly
According to center Liang Kai ShengYunHui venue construction way, at present, the "lotus" of the century the civil structure has been completed
,steel structure engineeringAlready began late last month. Because of the lotus, "" century steel structure consists of two" pressure ring
Between two ring ", more than 20 meters apart.
Therefore, in order to ensure the accuracy of the two ring is assembled, the contractor in accordance with the 1:1 ratio of two ring, in the first place
Selected the four nodes to assemble of test section. This is the reporter at the scene of the site to see more than 20 meters high
circularsteel frame.
"Through the pre assembled, can inspect each node can perfectly, the size is right."
Liang Kai tao says, pre assembled in the test process, the contractor only local fine-tuning, assembling accuracy
High.
At present, the test section is assembled. Construction of founder uninstalling test section. "The lotus" Steel Structure Building
Officially lifting will be started recently. Due to the steel structure assembly should be carried out at high altitude, node is more, only big nodes
There are 80, therefore, in order to ensure the assembly accuracy, the venue construction detection assembly center invited a third party
Size. To be crane steel structure should be promoted to the position, the third party will be on the size, location
After check, confirm and correct, to allow the contractor to make a final welding.
The wholesteel structure engineeringOn October 10, is expected to complete.
Lotus framework under pressure
According to understand, "century lotus" the 3700 - ton steel structure, is divided into two "pressure ring. Among them"
ressure ring "on high from the ground 49.5 meters, a diameter of 318 meters, the installation on large inclined column;" Press the ring"
About 29 meters high from the ground, a diameter of 270 meters. Press on the "ring" and "press ring" between, CHS
Connection, form "lotus" framework.
Will be installed on two ring, cable membrane structure. It is reported, "century lotus" roof of the white film from France
Import, covers area of 58000 square meters, covers an area of more than 70000 square meters, the weight of about 2000 tons.
Steel Workshop http://www.jingtabuilding.com/steel-structure-workshop.html and cable membrane roofing system constitutes the "lotus" of the century. "So heavy roofing system, to all
By 40 's lotus root large oblique pillars. "
Construction personnel, told reporters that by their preliminary calculation, each big inclined column will take about more than 400 tons
ressure. In order to improve the bearing capacity of large inclined column, contractor in large inclined column installed wire, breakdown pressure
.
Source: guangzhou daily
Steel structure will benefit from the real estate regulation and controlbuildingsteel structure
http://jingtasteel.blogspot.com/2013/04/steel-structure-will-benefit-from-real.html
2013年4月1日星期一
Light steel structure housing
Light steel structure housing, "dawn" in the formerAccording to authoritative sources, construction steel structure industry will drive the rapid development in our country, the market demand will grow at a faster speed. It is understood that lightSteel structure housingResearch and development of pilot projects all over the world, there are a variety of low-rise, multi-layer and high-rise design scheme and examples. Because of the light steel structure with large span and large space, the space use is flexible, fast construction speed, seismic performance is good and can be recycled, some experts predict, it will to our country the traditional pattern of residential structure has a certain impact.
lightSteel structure housingShare remains to be improved
Since the mid - 1980 - s, China began to imported from abroad, a large number of light steel structure building system. This kind of structure form of steel structure building is a gantrysteel frameDerived on the basis of the various forms, containment system for color pressure plate, composite plate and light body material is given priority to, such as heat preservation cotton has formed, including lighting, ventilation, sealing and so on, into a new system of steel structure building system, known as light steel structure building.
Senior industry experts that define the light steel structure housing & ndash; & ndash; & ndash; It mainly refers to galvanized light steel keel for the building of housing structure, this structure more abroad to 1 layer, two layer of small residential single family type, is also useful to the construction of multi-family segment under 6 layer, the significant differences in the use the thick wall steel structure such as H section steel, thus known as light steel structure housing. Light steel structure residence has a good performance, light weight, high degree of factory, construction speed is quick, the advantages of small labor intensity, nearly 30 years, light Steel Structure Workshop http://www.jingtabuilding.com/steel-structure-workshop.html
housing gradually developed countries in Europe and the us have formed a set of very mature technology.
In recent years, the light steel structure building, with its strong economic, technical and safety, the emergence in the field of domestic residential construction, and formed a certain impact to traditional reinforced concrete residence, after nearly 10 years of development, light steel structure residence has already formed a considerable construction market.
The personage inside course of study analysis, light steel structure residence has got rapid development in our country, a variety of factors. First of all, the light steel structure residence is a kind of environmentally friendly building. Due to its extensive use of new building materials such as steel, construction process for dry operation, to avoid the brick, stone, cement, sand, such as environmental pollution, and use most of the light steel structure residential building materials can be recycled, seldom produce construction waste, is a kind of sustainable architecture. Second, light steel structure housing comprehensive cost is low, lower than the same concrete building construction area of about 1/3; The construction speed is quick, only in concrete construction for two-thirds of the time. Again, the light Steel Workshop housing with good ductility, can design the unique architectural modelling, give a person with an informer new impression. Finally, because of its construction season without limit, can reduce the investment in real estate business cycle, make its rapid turnover of funds, reduce unnecessary capital risk and bank interest, for its lucrative.
Light steel structure housing because of these advantages, the current has been applied in many domestic cities, but look from the overall distribution of the real estate market, the share of light steel structure residence is still small, even less than 1%. The personage inside course of study thinks, the development of an emerging industry is always a period has been generally recognized by the market and acceptance process, no matter from the perspective of national economic development, or from the point of view, for the sustainable development of housing industrialization and the construction of light steel structure residential prospects are predictable. Light steel structure building enterprise development plays an important role
The personage inside course of study introduces, light steel structure residence is introduced, the our country, in the period of high growth market and are in urgent need of light steel structure, and many foreign countriessteel structure supplieroured into the Chinese market, they a lot of investment, the current occupied nearly half of the domestic light steel structure market. At the same time, the light steel structure of the domestic enterprise also grow in the competitive environment, they not only have light steel structure production and installation capability, but also have a certain design and research and development ability.
Industry insiders believe that light steel structure building enterprise development plays an important role in the industry, light steel structure construction enterprises for marketing strategy, technology research and development direction, the assurance of talent employment, etc, directly about industry development prospects. Light steel structure construction enterprises in our country belongs to the emerging industry, the enterprise since its birth, not only faced with the international standard of steel structure construction market, but also to face the financial markets, technology markets, labor market, information market, people need more specialized research industry trends, flexible coping for enterprises.
Various forms in our country, light steel structure construction enterprises coexist, both the universal enterprises, collective enterprises and individual enterprises, sino-foreign joint ventures, cooperative enterprises, independent business within the territory of our country foreign owned enterprise and to the output of light steel structure building products outside the enterprise. At present, into the intense competition in the industry. Different types of competition between enterprises is mainly through technical, product, marketing and services to compete for customers and markets, in addition, enterprises in talents, capital and raw materials, etc, also launched a fierce competition. Through proper competition between the enterprises, in the external, light steel structure construction enterprises have gradually formed the interests community. Under such market background, requirement enterprise not only consider their own interests in the business, also need to consider stakeholders, such as customers, suppliers, vendors and the interests of the collaborators. If the relationship is bad, will bring to enterprise management difficulties.
In addition, light steel structure construction enterprises need to moment in the face of fluctuations in the price of the steel structure and the impact of the market is not standardized and so on.
Compared to European and American developed country, light steel structure construction enterprises at present, the overall level of light steel structure construction enterprises in our country is low, still need to improve, improve, thereby narrowing the gap with foreign enterprises, to better promote the development of industry.
Fly it
Not long ago, the editors learn from housing and urban-rural development, our country the first about technology in the field of light steel structure housing procedures & ndash; & ndash; & ndash; "Technical code for light steel structure housing" will be held on October 1. This regulations come on stage to the development of light steel structure housing play a positive role. Light steel structure housing development present situation and prospects its future development will bring what impact to traditional housing & hellip; & hellip; We will from this day to open a column & other; Pay attention to light steel structure residential development & throughout; About the problem of employment at in-depth discussion, stay tuned.
Xuzhou museumsteel structure engineeringGoing smoothlyRecently
http://jingtasteel.blogspot.com/2013/03/xuzhou-museumsteel-structure.html
lightSteel structure housingShare remains to be improved
Since the mid - 1980 - s, China began to imported from abroad, a large number of light steel structure building system. This kind of structure form of steel structure building is a gantrysteel frameDerived on the basis of the various forms, containment system for color pressure plate, composite plate and light body material is given priority to, such as heat preservation cotton has formed, including lighting, ventilation, sealing and so on, into a new system of steel structure building system, known as light steel structure building.
Senior industry experts that define the light steel structure housing & ndash; & ndash; & ndash; It mainly refers to galvanized light steel keel for the building of housing structure, this structure more abroad to 1 layer, two layer of small residential single family type, is also useful to the construction of multi-family segment under 6 layer, the significant differences in the use the thick wall steel structure such as H section steel, thus known as light steel structure housing. Light steel structure residence has a good performance, light weight, high degree of factory, construction speed is quick, the advantages of small labor intensity, nearly 30 years, light Steel Structure Workshop http://www.jingtabuilding.com/steel-structure-workshop.html
housing gradually developed countries in Europe and the us have formed a set of very mature technology.
In recent years, the light steel structure building, with its strong economic, technical and safety, the emergence in the field of domestic residential construction, and formed a certain impact to traditional reinforced concrete residence, after nearly 10 years of development, light steel structure residence has already formed a considerable construction market.
The personage inside course of study analysis, light steel structure residence has got rapid development in our country, a variety of factors. First of all, the light steel structure residence is a kind of environmentally friendly building. Due to its extensive use of new building materials such as steel, construction process for dry operation, to avoid the brick, stone, cement, sand, such as environmental pollution, and use most of the light steel structure residential building materials can be recycled, seldom produce construction waste, is a kind of sustainable architecture. Second, light steel structure housing comprehensive cost is low, lower than the same concrete building construction area of about 1/3; The construction speed is quick, only in concrete construction for two-thirds of the time. Again, the light Steel Workshop housing with good ductility, can design the unique architectural modelling, give a person with an informer new impression. Finally, because of its construction season without limit, can reduce the investment in real estate business cycle, make its rapid turnover of funds, reduce unnecessary capital risk and bank interest, for its lucrative.
Light steel structure housing because of these advantages, the current has been applied in many domestic cities, but look from the overall distribution of the real estate market, the share of light steel structure residence is still small, even less than 1%. The personage inside course of study thinks, the development of an emerging industry is always a period has been generally recognized by the market and acceptance process, no matter from the perspective of national economic development, or from the point of view, for the sustainable development of housing industrialization and the construction of light steel structure residential prospects are predictable. Light steel structure building enterprise development plays an important role
The personage inside course of study introduces, light steel structure residence is introduced, the our country, in the period of high growth market and are in urgent need of light steel structure, and many foreign countriessteel structure supplieroured into the Chinese market, they a lot of investment, the current occupied nearly half of the domestic light steel structure market. At the same time, the light steel structure of the domestic enterprise also grow in the competitive environment, they not only have light steel structure production and installation capability, but also have a certain design and research and development ability.
Industry insiders believe that light steel structure building enterprise development plays an important role in the industry, light steel structure construction enterprises for marketing strategy, technology research and development direction, the assurance of talent employment, etc, directly about industry development prospects. Light steel structure construction enterprises in our country belongs to the emerging industry, the enterprise since its birth, not only faced with the international standard of steel structure construction market, but also to face the financial markets, technology markets, labor market, information market, people need more specialized research industry trends, flexible coping for enterprises.
Various forms in our country, light steel structure construction enterprises coexist, both the universal enterprises, collective enterprises and individual enterprises, sino-foreign joint ventures, cooperative enterprises, independent business within the territory of our country foreign owned enterprise and to the output of light steel structure building products outside the enterprise. At present, into the intense competition in the industry. Different types of competition between enterprises is mainly through technical, product, marketing and services to compete for customers and markets, in addition, enterprises in talents, capital and raw materials, etc, also launched a fierce competition. Through proper competition between the enterprises, in the external, light steel structure construction enterprises have gradually formed the interests community. Under such market background, requirement enterprise not only consider their own interests in the business, also need to consider stakeholders, such as customers, suppliers, vendors and the interests of the collaborators. If the relationship is bad, will bring to enterprise management difficulties.
In addition, light steel structure construction enterprises need to moment in the face of fluctuations in the price of the steel structure and the impact of the market is not standardized and so on.
Compared to European and American developed country, light steel structure construction enterprises at present, the overall level of light steel structure construction enterprises in our country is low, still need to improve, improve, thereby narrowing the gap with foreign enterprises, to better promote the development of industry.
Fly it
Not long ago, the editors learn from housing and urban-rural development, our country the first about technology in the field of light steel structure housing procedures & ndash; & ndash; & ndash; "Technical code for light steel structure housing" will be held on October 1. This regulations come on stage to the development of light steel structure housing play a positive role. Light steel structure housing development present situation and prospects its future development will bring what impact to traditional housing & hellip; & hellip; We will from this day to open a column & other; Pay attention to light steel structure residential development & throughout; About the problem of employment at in-depth discussion, stay tuned.
Xuzhou museumsteel structure engineeringGoing smoothlyRecently
http://jingtasteel.blogspot.com/2013/03/xuzhou-museumsteel-structure.html
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