火灾后型钢混凝土偏心受压柱偏心距增大系数研究  

Post fire bias distance increase coefficient of eccentrically loaded steel reinforced concrete columns

作　　者：薛素铎[1] 张超[1] 王广勇[2] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]中国建筑科学研究院建筑防火研究所,北京100013

出　　处：《建筑科学》2017年第5期14-18,共5页Building Science

基　　金：国家科技支撑计划课题(2014BAL05B04)

摘　　要：根据火灾后偏心受压型钢混凝土(SRC)中长柱的试验结果,对经历火灾全过程的偏心受压SRC柱偏心距增大系数进行了研究。在理论分析的基础上,以极限曲率为参数,推导了考虑高温作用影响的火灾后偏心受压型钢混凝土长柱偏心距增大系数的计算公式,基于已有试验结果,对计算结果与试验结果进行比较分析。结果表明,建议的公式计算结果与试验结果吻合较好且便于计算,可为工程设计提供参考。Based on the test results of 5 steel reinforced concrete （SRC） columns, post fire bias distance increase coefficient of eccentrically loaded SRC columns subjected to fire including cooling phase is studied. On the basis of theoretical analysis, a formula is put forward to calculate post fire bias distance increase coefficient with the ultimate curvature as the main parameter for eccentrically loaded SRC columns considering the effect of high temperature. Meanwhile, the calculated results are compared with test results. It is concluded that the calculated results agree well with the test results, which can be applied to provide reference for engineering design.

关 键 词：火灾后 型钢混凝土 偏心受压柱 偏心距增大系数 

分 类 号：TU375[建筑科学—结构工程]