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寿县合兴浅谈钢结构厂房的钢在火灾中的特点

发布时间:2015-11-10 9:48:59 浏览次数:528
   钢的耐火性能,受热后,马上就会出现塑性变化,用15分钟将会“面条”的缺失的部分,根据破坏的整个失去稳定而破坏。钢筋破坏后很难。

    我们的建筑上使用的钢材,在常温下,高强度,但温度500左右了钢材的强度,即开始逐渐损失,他也已经和正常值一半的支撑能力。据测定,建设中常用的抗火性能是冷扎钢琴的温度而不是破坏354火灾一般火灾中进行5分钟后温度已达556。因此一般裸钢耐火极限理论洋藥15分钟左右。



The fire resistance of the steel, after heating, immediately will appear plastic changes, with 15 minutes will be "noodles" the missing part, according to the destruction of the entire loss of stability and damage. It's hard to break the bar.


Our construction uses the steel, in the room temperature, the high strength, but the temperature 500 left the steel strength, namely starts to lose gradually, he also already and the normal value half the support ability. According to the determination, the construction of the fire resistance is commonly used in the temperature of the piano is cold, not to destroy the fire in the fire of 5 minutes after the temperature has reached 556. So bare steel refractory limit theory modern medicine for 15 minutes.



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