Housing material Steel and Its Superiority
China's land resources dwindling, the future of daily living with a house to the field of steel Foshan is the trend, but also the technology and human civilization into generation flag. For ordinary people Foshan Steel Housing made from what material made curious record some of the information found today we learn together:
A main frame portion of the material
H-beam, can be divided into hot-type and high-frequency welded. At this stage (the transition period) Domestic steel residential development preferred timber. The disadvantage is that large steel consumption, node processing difficulties.
U-shaped steel, cold-formed shape, thickness 1.6-8mm height of 50-452mm. Not commonly used in the US and European markets, in Japan it is light steel housing, particularly in modular housing is the preferred timber support beams. The advantage is less steel consumption, the disadvantage is a sectional unstable and deformation of aging into account. It is hard to compete with H-shaped steel.
C-shaped steel, cold-formed shape, thickness 1.5-6mm height of 73-380mm. In Europe it is the support beams of light steel housing of the main timber, steel structure housing in Japan as a support column with a small amount applied. In China, the market with less and the lack of appropriate experience, at present, although it is difficult to compete with H-shaped steel but should be used as the main research directions steel housing steel.
Square steel, roll forming, high-frequency welding, the thickness of 1.5-8mm, side length of 20-200mm. In Japan it is a modular housing support pillar preferred timber, Europe is not adopted. The advantage is a cross-sectional stability, easy node arrangement, the disadvantage is the steel consumed in large quantities. At present it is difficult to compete with H-shaped steel.
Metal frame, roll forming, as a load-bearing keel its thickness is 1.5mm or more, side length of 60-360mm. Japan rarely used such a support system, a number of major European and American manufacturers are adopting. Strut channels of domestic production capacity is large, its production equipment and raw materials supply are mature. But there are two points worth noting: First, the small cross-sectional size metal frame, the support beams fire resistance than other materials, attention to detail design; second, the country with the support light steel keel as load-bearing beams design little experience, the mechanical calculation methods and software research and development nodes of support systems should be the focus.
Second, the wall frame materials:
Envelope in Europe in the steel housing (external walls, ceiling) skeleton is metal frame, the thickness of 1mm or less. In the domestic office decoration widely applied. The main feature is the support system envelope with oblique rod, this structure is to accommodate the outer wall system, because Japanese steel housing and the exterior wall panels decorative plates are one, and each surface area is small, supporting the role of the wall does not provide for tension, so the support required to strengthen the oblique rod.
Third, light wall materials
Foreign residential light steel walls are made of lightweight steel (or wood) keel and light wall panels add thermal insulation, sound insulation and waterproof material.
At home and abroad the most common interior panels are fireproof gypsum board, it is used in most office decoration. Waterproof gypsum board, can be used as kitchen and bathroom wall panels. Low density fiber cement board can be used as the external walls of the panel. OSB, technology, impact resistance, the United States mainly use it as a panel facades. China has a small number of manufacturers.
Foreign Strut residential insulation used, sound insulation material generally glass cotton-based, adequate domestic supply.
Fourth, waterproof material
Foreign residential buildings are affixed unidirectional permeable breathable waterproof paper, it does not yet have domestic production capacity. High-density fiberboard cement, its easy installation and maintenance, residential applications in Europe generally, but the production equipment is expensive, there are no manufacturers. PVC plate, residential applications in Europe generally, there are no manufacturers that facilitates installation and maintenance, and manufacturing is easy, therefore, domestic plastic industry is very easy to develop such products. Vacuum extrusion of high density fiber cement board, using it mostly Japanese housing, domestic manufacturers have to introduce the technology, but because of its manufacturing technology complex, expensive, and the installation process is complex, difficult to promote greater.
Fifth, the roof (tile)
Terra cotta, a traditional building with tile, heavy and complicated installation process, do not apply to steel housing.
Cement Tile, domestic steel manufacturers and the residential use too.
High-density fiberboard cement tile, light and easy to install, foreign steel structure housing the application of the more common, but more complex production equipment and technology, technical difficulties in water resistance and weather resistance should not be guaranteed, there is no domestic production capacity.
Metal tile, light and easy to install, is the steel structure housing the roof of the main timber, production equipment and the process is simple, its technical difficulty to rust and weather resistance. Although there are many domestic steel tile manufacturers, but they can not provide high-quality surface sandblasting roofing tile.
Sixth, doors, windows and stairs
Ordinary domestic production of doors and windows from both quality and specifications varieties, the basic can meet market demand. High-end doors and windows still need to import. Inclined roof window country has a joint venture factory production, high-end garage doors are also a joint-venture assembly plant.
Seven floor plates material
Foreign steel housing commonly used wood for the floor board, because steel is a continuation of the residential wood frame house evolved. In our application to be facing two problems, one is the shortage of timber resources, and second, with current fire safety regulations conflict.
Steel sheeting composite slabs, it is primarily used for multi-layer and high-rise buildings in low-rise residential applications is overkill, the cost is difficult to accept. Autoclaved lightweight aerated concrete (ALC) floor more often in Japan, the country will also already have production capacity.
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