异形柱结构对平面布置的要求  

Plane Layout Required by RC Structure with Special Shaped Columns

作　　者：何玲[1] 杨正海[1] 潘文[1] 

机构地区：[1]昆明理工大学建筑工程学院,650051

出　　处：《建筑结构》2007年第7期11-13,共3页Building Structure

摘　　要：针对地震作用方向对异形柱受力性能的影响进行了数值分析。分析结果表明,异形柱(尤其是L形柱)的不同平面布置,将会改变异形柱的不利地震作用方向以及结构的承载性能。建议整体计算必须考虑地震作用方向的影响;有斜交抗侧力构件的异形柱结构,除了考虑两个主轴方向的水平地震作用和±45°地震作用方向外,还应计入各抗侧力构件方向、与斜交抗侧力构件呈±45°地震作用方向的计算。异形柱宜采用等肢截面,平面布置宜简单、规则,以免增加多组地震作用方向的验算。The effect on load-carrying properties of special-shaped columns in different earthquake action directions is studied by numerical analysis, The research indicates that the plane layout with special-shaped columns （especially in L-shaped columns） will change disadvantageous direction of horizontal earthquake and structure load-carrying properties. It is suggested that the effect of earthquake directions shoud be considered in global analysis. Not only two principal axis directions and the directions of ±45° should be taken into account in such type structures with oblique construction member to resist force, but also the calculation of every direction of construction member and of ±45° should be checked. Special-shaped columns should use equal-leg cross-section and the plane layout should be simple and regular, for avoiding to add the calculation of multigroup earthquake action directions.

关 键 词：异形柱 截面特性 平面布置 不利水平地震 作用方向 

分 类 号：TU323.5[建筑科学—结构工程]