steel structure The main advantages of the plant are

one . Light weight, high strength and large span: steel products Although its density is larger than that of other building materials, its strength is very high. Under the same stress, the steel structure has a small dead weight and can be made into a structure with a large span.

two Short construction period: the structural parts of the plant are mainly prefabricated in the factory, and installed after being transported to the site. The assembly work is convenient to build.

three High fire resistance: when the surface temperature of steel is within 150 ℃, its strength changes little. When the temperature exceeds 150 ℃ At ℃, its strength decreases significantly. Generally Fire retardant coating It is coated on the surface of the steel structure to form a protective film, so as to improve the fire resistance limit of the component. Of course, the reasonable division of fire compartment Fire resistant roller shutter The use of is also very important.

four impervious waterproof : Rainwater infiltration is mainly through nodes or gaps. To achieve anti-seepage and waterproof screw Oral use Sealing washer Concealed fixing is adopted at the rear, and it is used at the lap joint of the plate sealant Or welding treatment, * * It is better to use full-length plates to eliminate overlapping, and the abdominal expansion at various nodes is strictly prevented water treatment 。

five Sound insulation: Metal The roof layer is filled with sound insulation materials (usually glass wool), or the metal tile surface is coated with heat insulation reflective coating.

six Ventilation and cooling: in general, high structure plants, there is no super power heating equipment, people are not very dense, and there is no odor or dust generation. The way of roof fan+gas tower can be used. For steel structure plants with higher structure and larger span, * * it is better to install large exhaust fan on the roof to exhaust air outdoors; Forming negative pressure in the room; A large amount of fresh air is pressed into the workshop from around the workshop to form air convection; The effect is good.

seven Good daylighting: install daylighting panels or daylighting glasses at specific locations on the roof. In consideration of the service life of skylights and the coordination with roof panels, their joints must be well waterproofed.