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    2022-01-12 17:35

    What are the fire protection functions of steel structure warehouse leasing?

    With the break and progress of modern economy, the construction of each city is not backward. With the vigorous development of high-rise buildings and the repeated improvement of building height, more and more people begin to pay attention to steel structures, because steel structure warehouse leasing has the advantages of high strength, light weight, good seismic performance, short construction period, low foundation cost, small structure occupation area and high industrialization degree. However, compared with concrete structure, a significant weakness of steel structure is that it is easy to conduct heat. When the surface temperature of steel reaches above 400 ℃, its strength and elastic modulus will be significantly reduced. When the temperature reaches 600 ℃, the strength of steel for steel structure is almost zero. The fire endurance of bare steel is usually only 15-30 minutes. According to the requirements of China's relevant building fire protection design code, the fire resistance limit requirements of the main load-bearing components of the building, such as columns, beams, walls and floors, are 0.5-3.0 hours respectively. China clearly stipulates that the steel structure must take fire prevention measures and reach the corresponding national standard pipe to achieve the corresponding fire prevention. In the past, the cast-in-situ concrete outer packaging layer, such as the fire barrier set by gypsum board, was generally coated with hollow slab, and fire retardant coating was generally used. Due to the wide use of anticorrosive coatings.

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