A_3钢高温力学性能的试验研究

Experimental research on mechanical behaviors of structural steel grades A_3 at elevated temperatures

结构钢的高温力学性能指标是钢结构抗火设计的重要依据。利用W AW-1000微机控制万能试验机、加温装置及变形测量装置,分别采用恒温加载和恒载加温两种试验方法,对我国某钢厂生产的A3钢在高温下的力学性能进行了22次试验,为我国钢结构建筑耐火设计提供重要的基础数据。

The mechanical properties of structural steel at elevated temperatures are important basis of steel structure＇s fire resistance design. By using WAW-1000 computer control testing machine, heating device and specially designed deformation measuring appliance, 22 times experiments have been carried out to investigate the mechanical behaviors of structural steel A3at elevated temperatures by adopting loading under constant temperature test and heating under constant load test. The results supply some basic data for steel structure＇s fire resistance design.