彩钢板具有轻质、强度高、安装便捷等特点,目前广泛用于地震等灾区群众安置板房,厂房、仓库、商店、售货亭以及建设工程施工现场临时性用房,特别一些高层建筑和大跨度建筑,应用这种轻钢结构造房的优势更为明显。
Color steel plate has the characteristics of light weight, high strength and convenient installation. At present, it is widely used in earthquake and other disaster areas to resettle plank houses, workshops, warehouses, shops, kiosks and temporary buildings on the construction site of construction projects, especially for some high-rise buildings and large-span buildings, the advantages of using this light steel structure to build houses are more obvious.
下面我们主要介绍一下导致彩钢板房发生火灾的一些主要因素。
Now we mainly introduce some main factors that lead to the fire of color steel sheet room.
1、对彩钢板的火灾危险性和火灾危害性认识不足。彩钢夹芯板以彩色涂层钢板为面材,芯材主要有聚苯乙烯、聚氨酯、岩棉三种。前两种是在两层薄钢板中间夹入不同厚度的聚苯乙烯(简称苯板)或聚氨脂,这种材料一旦受到高温火花或明火作用时立刻燃烧,因材料自身的蜂窝状结构决定了与空气的接触面加大,燃烧起来非常猛烈,扑救过程中,水和灭火剂只能喷到彩钢板外面的钢板上,不能直接作用于夹层里的燃烧物,且燃烧产物毒性特别大,易造成人员伤亡,此类材料因造价相对较低,非常受投资商或开发商的青睐。后一种是在两层薄钢板中间夹入不同厚度的岩棉,该材料属非燃烧材料,防火隔热作用比较好,但因其造价相对高,一般投资商或开发商都不愿使用。
1. The fire risk and fire hazard of color steel plate are not well understood. The surface material of color steel sandwich panel is color coated steel plate, and the core materials are polystyrene, polyurethane and rock wool. The first two are polystyrene (benzene plate) or polyurethane with different thickness sandwiched between two thin steel plates. Once the material is subjected to high-temperature spark or open fire, it will burn immediately. Due to the honeycomb structure of the material itself, the contact surface with air will be enlarged, and the combustion is very violent. During the fire fighting process, water and fire extinguishing agent can only be sprayed on the steel plate outside the color steel plate It directly acts on the combustor in the interlayer, and the combustion product is particularly toxic, which is easy to cause casualties. Because of its relatively low cost, this kind of material is very popular with investors or developers. The latter is a kind of rock wool with different thickness sandwiched between two thin steel plates. It is a non combustible material with good fire and heat insulation effect. However, due to its relatively high cost, most investors or developers are reluctant to use it.
2、部分彩钢板建筑项目未经消防审核、验收,致使彩钢板建筑存在先天隐患。在建设中有的项目在设并未考虑防火设计,或者虽有防火设计但在施工过程中未按图施工,项目竣工后未经消防验收,致使可以把关的几个环节都忽略了。
2. Some color steel plate construction projects have not been examined and accepted by fire protection, which leads to the inherent hidden danger of color steel plate construction. Although the fire protection design has not been considered in the construction process, some projects have not been considered in the construction process, or the fire protection design can not be considered.
3、业主擅自改变使用功能,增加火灾危险性。部分彩钢结构厂房在申报消防审核和验收时的火灾危险性是丁戊类,而实际上可能是丙类厂房,或者投入使用初期是丁戊类生产,后来因生产项目调整后未及时申报。
3. The owner changes the use function without authorization to increase the fire risk. The fire risk of some color steel structure workshops in the application for fire audit and acceptance is class D and E, but it may be class C workshop in fact, or it is class D E production in the initial stage of operation, but it is not reported in time after the production project adjustment.
4、电器安装、使用不当也是造成彩钢板房火灾的重要原因。彩钢板建筑起火原因多与违规使用电器、电路老化等有直接关系,有些是将电线直接安装在彩钢板的夹芯层内,有些是电线穿过墙体时直接在彩钢板上钻空穿越,钻空不加护套容易造成电线绝缘层破损而短路打火引起火灾。投入使用后管理不善,在靠近彩钢板的部位使用明火或进行焊割作业引起彩钢板内部可燃夹芯材料燃烧导致火灾发生
4. Improper installation and use of electrical appliances is also an important cause of fire in color steel sheet room. The fire causes of color steel plate buildings are mostly directly related to the illegal use of electrical appliances and circuit aging. Some wires are directly installed in the sandwich layer of color steel plate, and some are directly drilled through the color steel plate when passing through the wall. The drilling without sheath is easy to cause damage to the insulation layer of the wire and cause fire by short circuit. After being put into use, improper management, open fire or welding and cutting operation are used near the color steel plate, which causes the combustion of combustible sandwich materials inside the color steel plate, resulting in fire