【摘要】 对钢结构火灾下的热机耦合响应进行了非线性有限元分析,考虑了几何非线性和材料非线性,对次梁采用了不做防火保护以及梁和柱的节点用铰接的方法来进行计算.得出了钢结构高温条件下热载荷、热膨胀、热梯度对整体结构机械性能具有显著影响的结论.更多还原

【Abstract】 Taking into consideration,the hardening of material nonlinear,generic nonlinear,unprotected second beams as well as pin for beams and column,this paper makes finite element analysis of thermo-mechanical couple behavior for steel structure resistance fire.The results of the analysis indicate that the mechanical behavior of composite steel-frames in fire conditions is dominated by the effects of thermal loading,thermal expansion and thermal gradient.更多还原