The steel structure housing industrialization business opportunities to attract "eyeball"How to reduce energy consumption in residential construction and use process, achieve energy conservation and environmental protection, is the chief problem of the current residential construction in our country.Steel Structure Warehouse http://www.jingtabuilding.com/steel-structure-workshop.html housingSystem because of easy to realize industrialized production, standardization production. Belongs to the green environmental protection building. Renewable reuse, accord with the strategy of sustainable development, more and more cause the attention of the construction industry. Countries in recent years toSteel structure housingAttention and support will be significantly increased, the related technical standard formulation work also in gradually into the track. Related to aspects such as the ministry of construction also launched a 36 items & other; Steel structure housing system and the key technology & throughout; Research topic for iron and steel enterprises in the product development research, puts forward a new research direction. These signals show that the steel structure housing industrialization of spring has come.
Industry guide the demand increases
Steel structure industry driven by the rapid development of China's steel demand for steel structure, constructed the huge potential for China's steel industry development platform. In recent years, the domestic market of steel used in construction steel structure increasing annually with 500000 tons of speed up. In 2005, construction steel structure steel demand is expected to reach 14 million tons, and in the next few years, may increase to 18 million tons. Compared with the developed countries in the world, the steel structure industry in China has a larger development space and the application field, residential construction is gradually becoming the pillar industry of national economy, ten years is expected to 5.6 billion square meters of new housing, steel structure residential building will be 5.6 million a year?? 28 million square meters. Compared with the traditional structure, steel structure residence in use function, design, construction, and comprehensive economic has obvious superiority.
China clearly pointed out that the development of residential steel used in key areas and key technology refers to the building of cold, hot-rolled steel bar and connection technology, steel welding nets and construction steel structure production and installation technology.
At present, in the production of construction materials and applications, mainly there are advantages of structural steel varieties (such as quality, thick plate, structural steel welding, etc.), high strength steel application proportion is low, the economic profile hot-rolled H section steel and cold bending profiles are used much, less problems such as product specifications. Industry experts put forward, and strive to improve the quality of structural steel, varieties, properties and application level, in 2010 the national steel structure steel weight of the year will reach 4% 5% of steel production, varieties required to high value-added step by step. Mainly embodied in the following aspects:
special thick plate steel structures of tall building (the shock can be germinated, Z to) all the localization, structure with high strength low alloy steel varieties increased (such as welding of structural steel and low bend reinforcement steel and refractory steel, etc.). Application proportion increased.
hot rolled H section steel domestic application all localization, and developed a thin wall of hot-rolled h-beam produced by controlled rolling technology and strength, good low temperature impact toughness of star h-beam and other new products.
- production and supply of high strength cold-formed profiles, development and production of new varieties for low-rise and light steel structure, such as hollow flange beam, corrugated web beam, large cross-section ribbed C payments, such as the recent should be as soon as possible production supply oblique edge Z steel, dovetail pressure plate.
- vigorously development, the production performance good generalization and commercialization of steel structure products and components, such as series of light steel structure housing, honeycomb, underground engineering steel support beam and T section steel truss and so on.
Should popularize multi-storey light steel structure housing
The personage inside course of study thinks, the current domestic. Although layers, including a handful of high-level steel structure housing has been built, but basically all use steel frame, pouring concrete, from the strict sense is not a real steel structure housing, no good play to the superiority of steel structure housing, even the sound insulation, waterproof and so on basic problems are unsolved. Therefore, the new residential building system research and development and the introduction of good performance has become the top priority.
Multi-storey light steel structure residence is a new type of energy-saving and ground-saving residential system. Light steel structure residence has excellent energy saving performance. This kind of structure with light weight, seismic, heat preservation, heat insulation performance is good, dry operation, water-saving effect is remarkable, short time limit, low cost advantages, more and more known by people. Abroad by using this system to build a small house for nearly 30 years of history, in recent years in the United States, Canada and other countries has been developing rapidly. But in our country, research and development and the introduction of multilayered cold bending thin-wall steel housing system, stimulate the circulation of steel is used to carry out the & other; Throughout the development of circular economy and build a conservation-minded society &; A specific policy measures. At present, developed by hangxiao high-rise steel structure residential building system and related products have been listed as the ministry of construction to promote projects, and has been applied in the project under construction in wuhan century home. The project will build 12 24 layer of high-rise residential buildings, is the home of the first true sense of green high-rise steel structure residential building projects.
Construction ministry concerned expert analysis, using the superiority of multi-storey light steel housing system mainly includes: the first is land. On the one hand, multi-storey light steel structure housing adopts composite wall, the main structure of cold bending thin-wall steel keel, heat preservation material such as cotton, plasterboard, can completely replace the current our country is still in extensive use of solid clay brick, can reduce the destruction of farmland by the brick; On the other hand, can effective use of land resources, increase the residential use area, multi-storey light steel structure housing area less than masonry structure and concrete structure, can increase effective use area of about 6%. Second is energy conservation. If using light steel structure construction of multi-storey residential, according to the European and American standards, residential real annual energy consumption can be reduced to 6 liter/square meters, equivalent to about BiaoMei 8.75 kg/square meters, can save BiaoMei 17.5 kg/m2. The third is water. Light steel structure is adopted during the construction of do homework, in addition to the foundation construction in water, no water is used in the construction site is almost. So, construction of multi-storey light steel structure residential construction water only one item can save billions of tons of water a year. The fourth is beneficial to environmental protection. At present, the multi-storey residential structure system is mainly for the masonry structure and concrete frame structure, the use of Portland cement material, after the break-up of the building, it will become difficult to recycle waste, cause damage to the environment. At present, many developed countries are studying as much as possible reduce the dosage of cement products. Compared with light steel structure residential building system is very conducive to environmental protection.
To break through the bottleneck at present
Although multi-storey light steel structure residence is a new type of energy-saving and ground-saving residential system. But the popularizing this new type of housing system in our country, in addition to the lack of specific code of steel structure housing, policy support, two key problems to be solved, there are few practical talents, the steel structure housing costs are higher. Some construction standards remains to be perfect too.
Concerned expert thinks, multi-storey light steel structure housing development in China, problems are not exist in both raw materials and technology, development of multi-storey light steel structure housing the biggest obstacles and bottlenecks, is at present our country is much higher than other developed countries of the code for fire protection requirements. In America, for example, the United States regulations multi-storey light steel structure residential fire resistance as load bearing wall l h, and the provisions of the code for fire protection for at least 2.5 hours. The specifications after considering only the fire safety evacuation time, and in addition to considering the evacuation of the code for fire protection in our country, also considered salvage building and as much as possible. Thus, multi-storey light steel structure housing to meet the requirements of the code for fire protection, it must be taken out of the abroad is much more complicated technical measures, such as increase the layer number and thickness of fire prevention plasterboard, increase the automatic sprinkler system, etc. These will undoubtedly increase the multi-storey light steel structure residential construction costs, influences its popularization. At the same time, the light steel structure housing because it has excellent performance, and low maintenance cost, some developed countries adopted a positive policy support on it. In the United States, consumers to buy light steel structure housing insurance premium as long as 60% of timberwork residence. In Japan, many financial institutions to buy light steel structure residential consumers can increase the line, at the same time is also given to extend repayment period. Large population in our country, the shortage of land resources, the introduction and promotion of multi-storey light steel structure residence has more important strategic significance, should from the loan, taxes, insurance of the housing system to support.
Steel structure construction related standards remains to be perfect.Steel structure production, installation is a systemic industry, need to welding skilled operators. A specificationSteel structure enterpriseNo more than 10 years of experience accumulation, no big project construction performance, it is difficult to ensuresteel structure engineeringroduction and installation quality. Xi 'an construction engineering safety quality supervisory center in the city's eight areas of 17 steel structure building engineering quality for special inspection, found that thesteel structure engineeringConstruction quality is not optimistic, not only the common quality problems, and manysteel structure engineeringIn violation of mandatory provisions of the state, some engineering operation welder unlicensed mount guard.
According to introducing, our country is rightsteel structure engineeringSingle-row checks because, unlike a normal reinforced concrete than ten engineering, steel proportion in the whole building is much higher. Therefore, to ensure thatsteel structure engineeringConstruction quality, must first guarantee the steel used in accordance with national standards. Inspectors found that most of the construction unit to use steel, welding materials, high strength bolt and common bolt material, no corresponding varieties, specifications, performance and other test records, also lack of security based on the engineering use. At the same time, some small and medium-sized enterprises for welder certificate is whether or not a don't seriously, in the 17 units inspected, most of the construction personnel no HanGongZheng. somesteel structure engineeringNot yet the completion acceptance and filing, has been put into use, and the engineering supervision unit to cooperated-builing there was no.
Assembly at the scene of the steel structure housing, not only rarely seen common mud ground conditions, construction site and less noise, dust and construction waste, construction basic is not affected by the weather and season, greatly shorten the production cycle and capital takes up time. Is also for this reason, the steel structure housing is also called & other; Come off from the line of the residential & throughout; . Steel structure housing will bring China & other; QinZhuanHanWa & throughout; Type of traditional building model with great changes, so is known as & other Throughout the fourth revolution of residential &; . Huge business opportunities to attract the attention of many enterprises at home and abroad, iron and steel enterprises should actively plan for and present some demonstration projects, take concrete actions to meet the arrival of the Warehouse Building residential building boom.
Hydratight era building steel structure office building
http://chinasteelframe.blogspot.com/2013/04/hydratight-era-building-steel-structure.html
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