熱門關鍵詞：濟南彩鋼板 | 濟南復合板 | 濟南彩鋼瓦 | 濟南c型鋼 | 濟南鋼結構 |
First, the fire resistance of the building is poor and easy to collapse. Most color steel plate buildings use steel structure, which is heavy. In case of fire, the fire temperature can reach 800 ~ 1000 ℃, far exceeding the critical temperature of 500 ℃ when the steel structure loses its static equilibrium stability. In the case of bearing load, the exposed steel structure will soon appear deformation, resulting in local damage, resulting in the overall collapse of the building. The ordinary color steel plate house will lose its bearing capacity and collapse about 10 minutes after the fire, which is not conducive to personnel evacuation and rescue materials.
Second, the core material is easy to ignite and spread rapidly. Most of the core filling materials of color steel plate are flammable materials such as polyurethane and polystyrene, which have low ignition point and poor flame retardancy. Once encountering high temperature spark, wire short circuit, molten bead or open fire, they will burn immediately, and the honeycomb structure of the material will increase the contact surface with the air, leading to fierce combustion. This kind of building is often large space, lack of fire separation facilities, when the fire spread in many ways, the rapid development of fire, easy to form a large area of combustion and three-dimensional combustion.
三是建筑內通道狹窄，影響疏散。很多使用單位為了追求使用面積，沒有留出符合規范要求的安 全通道和疏散空間，有些甚至占用安 全疏散通道搭建彩鋼房，一旦發生火災，人員疏散受阻，后果不堪設想。
Thirdly, the narrow passageway in the building affects the evacuation. In order to pursue the use area, many users do not set aside the safety passage and evacuation space in line with the requirements of the specification. Some even occupy the safety evacuation passage to build color steel rooms. In case of fire, the evacuation is blocked, and the consequences are unimaginable.
Fourth, combustion products are highly toxic and difficult to escape. Polystyrene and polyurethane are used as polymer materials in the core filler of color steel plate, which will produce a lot of smoke when burning. It contains a lot of toxic gases such as carbon monoxide and hydrogen cyanide, which has strong toxicity and irritation, and is easy to cause casualties of fire escape personnel and fire fighting personnel.
Fifthly, there are many disadvantageous factors and it is difficult to put out the fire. In the fire fighting process of color steel building, water and fire extinguishing agent can only be sprayed on the outer surface of color steel plate, and can not directly act on the combustibles in the interlayer.