凯里（中冶赛迪建筑设计研究院， 重庆 400013）

［摘要］针对平面不规则结构在地震中的扭转反应，研究了偏心方向对位移比的影响，比较并讨论了相对扭转响应和位移比这两个控制指标的差别，证明了位移比并不能完全反映平面不规则结构的扭转状况。分析了不同地震作用方向对结构扭转效应的影响。通过不同结构布置方案和地震作用形式的对比，证明了在实际工程设计中，应该根据每个结构的几何形状和构件分布形式，综合分析地震扭转反应，选取合理的衡量和控制指标，得出相应的最不利情况加以应对。

［关键词］平面不规则； 地震扭转效应； 位移比； 相对扭转响应； 地震作用方向

中图分类号：TU318.1文献标识码：A文章编号：1002848X(2013)07004705

Thoughts and discussions on torsional response analysis of structures with irregular plane

Kai Li(Institute of Architecture Design, CISDI, Chongqing 400013, China)

Abstract:Irregular plane structures suffer seismic torsional effect in the earthquake. The influence of eccentric direction on displacement ratio was studied. The differences between displacement ratio and relative torsinal effect were compared to prove that the displacement ratio can not reflect the torsional effect condition of irregular plane structures completely. The impact of different directions of horizontal earthquake action on torsional effect was analyzed. Different kinds of structural layouts and seismic effect forms were compared to prove that earthquakeinduced torsional effect should be considered comprehensively according to the geometrical characteristics and components layouts of each structure. Reasonable control indexes should be selected and the worst operating condition in design should be faced.

Keywords:irregular plane; seismic torsional effect; displacement ratio; relative torsional effect; direction of seismic action

作者简介：凯里，硕士，工程师， Email:kai861220@yahoo.cn。

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