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Prefabricated house is made of light steel as steel structure and sandwich panels for wall and roof. The insulation of sandwich panels can be polystyrene, polyurethane, rock wool or fiber glass. Assembled by nuts and bolts, anchor fasteners.
The modularized prefabricated steel frame structure with inclined braces is mainly composed of two assembly modules: the main floor and the inclined brace column, Factory weld connections are used inside the modules, and high strength bolts are used to connect modules on the construction site. the main floor consists of column bases, profiled steel sheet-concrete composite slabs, and truss girders; in fact it also includes some nonstructural members such as water pipes, air ducts, electric wires, fan coils, air conditions, and other facilities. It is like the mainboard of computer, so it is called main floor here. The steel truss beam is welded with channel steel, angle steel, and steel plate, which is convenient for installing pipes.
The construction of the modularized prefabricated steel frame structure with inclined braces mainly includes four steps. The first step is the construction of foundation. Some of the steel structure members are imbedded in the foundation during its construction, the connections for column are above the foundation. Figure 5 shows the example of a pile foundation. The second step is the installation of inclined brace columns and main floors. The flange of column is bolted to the flange of column base in the main floor and the inclined brace is bolted to upper or lower chord of truss. In this way, the structure is constructed one floor by one floor. The third step is the installation of outer wall. the outer wall is a large piece including the inner skin, heat insulation, window, and outer cover, which are fabricated in factory. It is integral hanged and bolted to the joint on the truss. The last step is the construction of interior wall and indoor decoration.
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