建筑用Q235钢在高温(火灾)条件下的力学性能研究

On the Mechanic Performance of Building-Purpose Q235 Steel Under High-Temperature(Fire)

对建筑常用的Q235钢在火灾情况下的力学性能分析,获得了Q235钢在高温下的屈服强度、极限强度、弹性模量、伸长率等力学性能指标的变化规律,并在恒温加载和恒载加温两种试验下对Q235钢进行强度对比。

The mechanic performance indexes of steel have great influence on the analysis and design of steel structure on tire-restrain capabilities. Through the mechanics analysis on mechanic performance of Q235, which is frequently used in construction,under hi-temperature, the article draws some rules about the variety of mechanic performance indexes, concerning the bend intensity, limit intensity, elastic module, elongating rate, etc, and still compares the intensity of Q235 steel between the experiments of loaded under constant temperature and heated under constant load.