With the development of society, steel structure engineering can be seen everywhere, especially high-rise steel structure building, once a fire, it is difficult to be extinguished in a short time. In order to minimize the number of casualties, a clear understanding of firefighting measures is essential.
Cladding of steel structure.
The protective measure is in the steel structure with an outer layer, which can be cast-in-place or sprayed. Cast-in-place solid concrete cladding is usually reinforced with wire mesh or steel bars to limit shrinkage cracks and ensure shell strength. The surface of the steel structure at the construction site can be protected by spraying sand pump, which can be lime cement or gypsum mortar, and can also be mixed with perlite or asbestos. At the same time, the cladding can also be prefabricated from perlite, asbestos, gypsum or asbestos-cement, lightweight concrete and fixed to the steel structure with adhesives, nails and bolts.
Water filling of steel structure building (water jacket)
Adding water in hollow steel structure is the most effective protection measure for fire and explosion prevention. It can keep the steel structure at a lower temperature in the fire, circulate water in the steel structure and absorb the heating of the material itself. Heated water can be cooled and recirculated, or cold water can be piped in to replace heated water.
Fire protection of steel structure enclosures.
The steel structure is installed in a wall or ceiling made of refractory material, or the members are hidden in the gap between the two walls. Only a small amount of refractory material or no addition is required to prevent fire. It is one of the most economical methods of fire fighting.
Fire resistance of steel structure expansion materials.
Steel structure fireproof coating to protect components, this method has good fire insulation performance, is not limited by the geometric shape of steel structure, generally does not need additional auxiliary facilities, the coating quality is light, has a certain aesthetic decorative effect, belongs to the modern advanced fireproof technical measures.
