First, the advantages of Qingyuan steel housing. Promote the industrialization of residential development should be combined with the actual situation of the housing, through the promotion of housing construction can meet application needs, but also to adapt to the requirements of the future direction of development of housing construction advanced, mature, economic, applicable to new technologies, new products, with modern science and technology to accelerate the transformation of traditional housing industry, housing industry to improve the overall efficiency of the technology and housing construction, and promote the development of residential product series, the scale of production, supply and support. Steel housing meets the above requirements in many ways:
First, from the perspective of building materials used, steel housing is a steel skeleton with a variety of lightweight composites assembled from the wall, load-bearing structural system or whether it is supporting floor and wall envelope, the materials can be achieve factory standardization, serialization, the bulk of production, changing the traditional houses with brick, a large number of the job situation in the field of tile, gray, sand, stone.
The second is from the introduction of new technically, steel residential building technology requirements are much higher than traditional brick or concrete houses, which can take advantage of new technology aspects of construction, offers a variety of new products to households, selectivity, adaptability economic residences.
Third Qingyuan steel housing can promote the further development of other building materials. With the popularization of steel construction, fire prevention, anti-corrosion materials and steel have been closely related to the rapid development; completely separate envelope with the load-bearing structure is conducive to lightweight, high strength, the development of energy-saving, environmental protection, new wall materials, innovation; suitable for use in steel manufacturing factory and member node equipment products provide a vast construction market; the requirements for higher degree of mechanization of construction, construction machinery to promote improvement and innovation.
Fourth, steel housing thanks to standardization, serialization, the mass production and mechanical operations, will greatly improve labor productivity. Residential development from the project to the enterprise, from the factory to the site, which is the inevitable trend of the development of the housing industry. With the accelerated process of industrialization, industrialized housing will not only have a profound impact on residential construction, and will have an enormous share of the residential market.
Second, steel housing problem to be solved. Our late start steel housing, large-scale research and development, design and manufacturing, installation or construction in recent years to develop.
Compared with developed countries, China's steel housing industrialization are still large gaps, needs to be constantly improved and enhanced. Currently the main problem restricting China's steel structure housing popularization and application development are:
First, construction materials, steel structures required for high yield steel, materials, material selection criteria and more complete, but still needs to improve, fire safety acceptance criteria such as cold-formed steel in the steel structure residential applications, fire weather development and application of steel.
Enclosure material steel residential aspects of research needs to be further improved, developed envelope material is suitable for factory parts production to meet building insulation, sound insulation, fireproof, waterproof and easy on-site connectivity performance requirements.
Second, the structural aspects of the system, for a variety of steel structure system, there is no clearly defined scope, and therefore in a residential structure selection, and more from the mechanical properties of the structure in order to reduce the amount of steel.
Design of steel structures need to consider the structural safety, economic performance, component parts standardization issue is a complicated systematic project, although there are a lot of research, but the practical application has not yet reached the industrialization widely, steel Selection and optimization of the structure housing the system still needs a lot of research and innovation.
Third, the economic performance of steel housing still exists the problem of high cost unilaterally, especially when compared to traditional in-situ concrete structure, construction and installation costs are often higher unilateral 5% to 15%, but at the cost of capital, labor costs, use area aspects, there are still obvious economic advantages, has good comprehensive benefits.
Fourth, the public aspect of the concept, although steel housing in foreign countries has matured and improved, but the people at home or novelty.
Chinese consumers accustomed to the long-term residence in masonry or reinforced concrete, slowly began to receive from the diet gradually, and then like steel housing, but also a gradual process.
In addition, fire, corrosion is a problem steel housing promotion constraints. Since the development of China's steel and application time is not long, the study of fireproof design is still not deep enough, the traditional fire-resistant paint design requirements for fire control requirements of performance and quality of construction, will increase the project cost.
Steel body with life compared to the durability of anti-corrosion coatings also need to improve. China in recent years fire anti-corrosion technology has made great progress, but compared with the industrial requirements of industrialization, it remains to be further research and development.
Restricting steel housing construction mode can not be underestimated, the existing housing construction pattern and design development and construction is substantially separated from the design and construction of the separation, this situation has seriously affected the steel housing industry development and promotion of the driving force.