论水平地震作用下对称和规则结构的抗扭设计

Torsional Design of Symmetrical and Regular Structures Under Horizontal Earthquake Actions

根据78抗震规范、89抗震规范以及抗震规范(GB50011—2001)、高规(JGJ3—2002)中有关结构抗扭设计的规定,对对称规则结构的定义、结构周期与位移的关系、结构偶然偏心的考虑、扭转周期比与扭转位移比的控制等进行了论述。澄清了当前设计中一些令设计者困惑的问题,为地震作用下对称规则结构的抗扭设计提供了理论依据与可行的设计方法。

Based upon rules about torsion resistance of structure in relevant different China design codes, some significant issues for symmetric and regular structure in both theory and design method,such as the definitions of symmetric and regular structure,the relationship between period and displacement,consideration of the occasional eccentricity,the control values of torsional period ratio and torsional displacement ratio,etc., are discussed.The design procedure provided is theoretically reasonable and applicable in design practice.