偏心结构的弹塑性平扭耦合反应与地震动强度  

Inelastic Coupled Response of Eccentric Buildings With Respect to Different Earthquake Intensity

作　　者：蔡贤辉[1] 邬瑞锋[1] 綦宝晖[1] 

机构地区：[1]大连理工大学工程力学系,大连116023

出　　处：《应用数学和力学》2000年第5期451-458,共8页Applied Mathematics and Mechanics

基　　金：国家自然科学基金资助项目!(596 780 33)

摘　　要：从五层剪切模型出发 ,研究不同地震动强度下的多层偏心结构所对应的平扭耦合弹塑性地震响应·　结果表明 :平扭耦合强度与构件的强度分布有关 ;按考虑扭转影响的振型分解反应谱法强度设计的结构 ,其平扭耦合运动程度在结构进入非弹性运动后就随着地震动强度的增大而减弱 ;而按比例刚度法强度设计的结构 ,其平扭耦合运动程度在结构进入非弹性运动后先随着地震动强度的增大而增强 ,超过一定值后随地震动强度的增大而减弱 。Using five_story shear models, the inelastic torsional coupled response of eccentric buildings to different earthquake intensity was studied. Results show that the torsional couple degree is closely related to the strength distribution of the resisting elements. Generally, the building designed by spectral modal analysis method has a tendency to move translationally as the earthquake intensity increases. The building designed by proportion rigidity method will rotate heavily to moderate earthquake, but when it is intensively excited into the inelastic phase, the coupling would decrease slightly, but could not be neglected.

关 键 词：弹塑性 扭转 耦合反应 偏心结构 地震反应 

分 类 号：TU311.3[建筑科学—结构工程]