长期荷载作用对矩形钢管混凝土轴心受压柱力学性能的影响研究  

THE BEHAVIOR OF CONCRETE-FILLED STEEL TUBULAR COLUMNS WITH RECTANGULAR SECTION UNDER OF LONG-TERM LOADING

作　　者：韩林海[1] 杨有福[1] 刘威[1] 

机构地区：[1]福州大学土木建筑工程学院

出　　处：《土木工程学报》2004年第3期12-18,共7页China Civil Engineering Journal

基　　金：福建省重大科技计划项目 ( 2 0 0 2H0 0 7)资助

摘　　要：考虑长期荷载作用效应的影响 ,进行了矩形截面钢管混凝土 (以下简称矩形钢管混凝土 )轴心受压构件变形和承载力的试验研究。基于美国混凝土学会 (ACI 1992 )提供的混凝土徐变和收缩模型 ,对长期荷载作用下矩形钢管混凝土构件的变形进行了计算 ,理论结果和试验结果吻合较好。利用数值方法分析了考虑长期荷载作用影响时 ,矩形钢管混凝土轴心受压柱的荷载 -变形关系曲线 ,理论计算曲线和试验曲线基本吻合。在系统分析了长细比、截面含钢率、钢材种类和混凝土强度等因素影响的基础上 。The behavior of concrete-filled steel tubular (CFST) columns with rectangular s ection under long-term loading was studied.The CFST columns with rectangular se ction were tested to investigate effects of long-term loading on behaviors of t he members.A model was used in study proposed by the ACI(1992)Specification.It i s shown that the results caculated is well agreement with that of the testing on e. Based on analyzing influence of factors such as length to breadth ratio,steel rate on section,steel sort and strength of concrete,a simplified method for the bearing capacity considering the effects of long-term loading has been propose d.

关 键 词：钢管混凝土结构 轴心受压柱 矩形截面 长期荷载 承载力 力学性能 

分 类 号：TU392.3[建筑科学—结构工程]