高温和轴向荷载下钢筋混凝土柱的力学行为  

Mechanical properties of reinforced concrete columns under high temperature and axial load

作　　者：牛晓燕[1] 申林林 陈聪 杜二霞[1] NIU Xiaoyan;SHEN Linlin;CHEN Cong;DU Erxia(College of Civil Engineering and Architecture,Hebei University,Baoding 071002,China)

机构地区：[1]河北大学建筑工程学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2018年第6期572-575,602,共5页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11502065);河北省教育厅重点项目(ZD2016146);河北省高等学校科学技术研究项目(QN2017308)

摘　　要：对于高温下混凝土柱的破坏问题,借助有限元分析软件ANSYS对轴心受压的钢筋混凝土柱在不同环境温度下承受相同轴向荷载时的力学行为进行研究.结果表明:钢筋混凝土柱的位移在各个环境温度下均呈现出自上而下逐渐降低的分层现象;钢筋混凝土模型显现出较为明显的温度效应;等效应力在模型中整体分布较为均匀,只在约束面自内向外有较为明显的升高,在约束面的边角处达到最大值.For the destruction of concrete columns at high temperature,the mechanical behavior of axially loaded reinforced concrete columns was studied based on the finite element analysis software ANSYS at different temperatures.The results show that the reinforced concrete columns show a downward deformation from top to bottom at all ambient temperatures.Meanwhile,the column shows a more obvious temperature effect.The overall distribution of equivalent stress is almost uniform in the model.Yet,there is a significant increase from the inside constraint surface to the outside constraint surface,and the equivalent stress reaches the maximum value at the boundary of the constraint surface.

关 键 词：钢筋混凝土柱 环境温度 轴向荷载下 力学性能 

分 类 号：TU375.3[建筑科学—结构工程]