考虑二阶效应的钢筋混凝土L形截面柱偏心距增大系数的研究  

Research on eccentricity accretin factor of L-shaped RC columns with unequal legs considering second-order effect

作　　者：孔祥娅[1] 孔祥松[2] 周宏业[3] 霍素彦[3] 

机构地区：[1]河北建筑设计研究院有限责任公司,河北石家庄050011 [2]中国矿业大学力学与建筑工程学院,北京100083 [3]河北农业大学,河北保定071001

出　　处：《四川建筑科学研究》2012年第6期73-75,共3页Sichuan Building Science

摘　　要：根据钢筋混凝土双向偏心受压柱的工作机理,利用大型通用软件ABAQUS对不等肢L形截面双向偏心受压柱受力及变形进行模拟分析,选取一种长细比和一种相对偏心距、变化四种荷载角,根据对长柱的全过程非线性分析结果,讨论了考虑二阶效应的不等肢L形截面柱偏心距增大系数,给出了不等肢L形截面长短柱的划分界限。Based on the behavior of RC columns subjected to biaxially eccentric loading, Using general-purpose software ABAQU5, a method for L-shaped RC columns with unequal legs subjected to biaxially eccentric loading is simulation analysis. Then, adopting a slenderness ratios, eccentricity ratios and 4 kinds of loading angle, on the basis of the nonlinear analysis of complete response process for long column calculated by the program ,discussed the eccentricity magnified factorthe with unequal legs column considering second-order effect, also the boundary for the classification of short columns and slender columns is given.

关 键 词：不等肢L形截面柱 二阶效应 荷载角 长细比 偏心距增大系数 

分 类 号：TU375.3[建筑科学—结构工程]