基于建筑结构扭转效应分析的抗扭设计方法讨论  

Discussion about torsional design method based on torsional response analysis of building structures

作　　者：方义庆[1] 李亚明[1] 翁文忠[1] 罗艳利 

机构地区：[1]上海现代建筑设计集团上海建筑设计研究院有限公司,上海200041 [2]上海巨一科技发展有限公司,上海200031

出　　处：《建筑结构》2009年第S2期88-93,共6页Building Structure

摘　　要：从扭转效应控制和扭转效应抵抗两个方面进行建筑结构抗扭设计讨论。建筑结构扭转效应控制不仅需考虑周期比、扭转位移比、同样应考虑扭平分量比;层偏心率不能成为扭转效应控制的直接判断因素,调整偏心率只是控制扭转位移比、扭转分量比的途径。在结合扭转效应控制及相关因素分析基础上,提出结构周期比、扭转位移比、扭平分量比的快捷控制方法。结合建筑结构扭转效应计算分析了偶然偏心、双向地震作用、扭转耦联具体应用问题及相互联系;并在其基础上,提出建筑结构扭转效应统一计算方法。结合国外规范和已有研究成果提出结构设计过程中,可以根据不同的扭转反应,采用不同的加强措施。From control of torsional response and torsion resistance of building structures,structural design of torsion resistance for building structures is discussed.Not only period ratio and torsional displacement ratio but also torsional content should be considered to control torsional response,the eccentricity of structure story can not be factors of judgement of torsional response,the adjustment of the eccentricity of structure story just is one of methods for controlling the ratio of the maximum story drift to the average of story drifts and the torsional content.Based on the analysis of torsional response and related factors,a fast control method for period ratio,the ratio of the maximum story drift to the average of story drifts and torsional content was derived.Based on the analysis of accidental eccentricity,bidirectional earthquake,coupled torsion and relationships between each other,the uniform method of calculating for torsional response for building structures is derived.Based on the foreign codes and some research results,it can be derived that different reinforcement methods can be used by different torsional response during structures designing.

关 键 词：结构扭转设计 扭转效应控制 扭转效应抵抗 

分 类 号：TU311[建筑科学—结构工程]