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（昆明理工大學(xué)建筑工程學(xué)院  650051）
【提要】  針對地震作用方向?qū)Ξ愋沃芰π阅艿挠绊戇M(jìn)行了數(shù)值分析。分析結(jié)果表明，異形柱（尤其是L形柱）的不同平面布置，將會改變異形柱的不利地震作用方向以及結(jié)構(gòu)的承載性能。建議整體計(jì)算必須考慮地震作用方向的影響；有斜交抗側(cè)力構(gòu)件的異形柱結(jié)構(gòu)，除了考慮兩個主軸方向的水平地震作用和±45°地震作用方向外，還應(yīng)計(jì)入各抗側(cè)力構(gòu)件方向、與斜交抗側(cè)力構(gòu)件呈±45°地震作用方向的計(jì)算。異形柱宜采用等肢截面，平面布置宜簡單、規(guī)則，以免增加多組地震作用方向的驗(yàn)算。
【關(guān)鍵詞】  異形柱  截面特性  平面布置  不利水平地震  作用方向
Plane Layout Required by RC Structure with Special Shaped Columns/He Ling，Yang Zhenghai，Pan Wen（Faculty of Civil Engineering and Architecture，Kunming University of Science and Technology， Kunming 650051，China）
Abstract: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.
Keywords:section characters；special shaped column； plane layout；disadvantageous direction；horizontal earthquake