建筑结构在不同方向水平地震作用下的扭转振动效应  

Responses of Torsional Vibration of Building Structures Induced by Horizontal Seismic Action from Different Directions

作　　者：潘东辉[1] 蔡健[1] 

机构地区：[1]华南理工大学,广东广州510641

出　　处：《工程抗震与加固改造》2004年第6期9-14,共6页Earthquake Resistant Engineering and Retrofitting

摘　　要：采用振型分解反应谱法计算结构在平扭耦联下的扭转振动效应 ,研究具有不同动力特征的单层结构在不同方向地震作用下扭转效应的变化 ,发现不同动力特征下地震作用方向对结构扭转效应的影响不可忽略 ,因此认为衡量建筑结构扭转振动效应时应考虑地震的作用方向 ,并对计算扭转振动效应时选用的地震作用方向提出建议。The present study attempts to investigate the responses of the coupled torsional and translational vibration of building structures by using a modal spectrum method. In doing so, different responses of torsional vibration of single-story structures with different dynamic characteristics are analyzed and the study shows that the influence of seismic direction should not be overlooked.The paper also discusses the necessity of the consideration of the seismic direction in estimating torsional vibration responses and several suggestions on seismic direction are proposed.

关 键 词：建筑结构 地震作用方向 扭转振动效应 扭转变形能 抗震设计 

分 类 号：TU311.3[建筑科学—结构工程]