（苏州市建筑设计研究院有限责任公司 215002）
【提要】详细分析了苏州国际博览中心标准展厅结构在地震作用下的反应，对在两个主轴方向抗侧刚度相差较大的结构在地震作用下的反应及与扭转效应的关系进行了分析，指出使结构主振周期避开场地特征周期是减小结构地震反应的有效途径，两个主轴方向抗侧刚度有一定差别有利于在经济的前提下减小扭转效应。
【关键词】 地震反应 振型分解反应谱法 时程分析 刚度 扭转
Seismic Reaction Analysis of Suzhou Expo Center  Standard Exhibition Hall/ZhaoHongkang,Dai Yaping (Suzhou Institute of Architecture Design Co., Ltd.， Suzhou 215002,China)
Abstract:Seismic reaction of the Suzhou expo center standard exhibition hall is analyzed and the seismic reaction on the structure whose stiffnesses are different in two directions and the relationship between the stiffness ratio of the directions and torsion reaction is diccussed. An efficient method to reduce the seismic reaction and avoid the character
istic period of the site is pointed out and the difference between the stiffness on t
wo directions redounds to reduce the torsion reaction economically.
Keywords:seismic reaction; responsespectrum analysis; timehistory analysis; stiffness; torsion