摘要
结构的偏心距对结构的抗震性能有较大的影响,对刚度偏心结构和质量偏心结构的地震响应作了详细深入的分析。建立了单层偏心结构在地震作用下的平扭耦联运动方程,并采用Rayleigh阻尼,应用时程分析法,对结构进行线弹性分析,解出在不同偏心率时结构模型的动力特性和地震反应,最后得出一些有用的结论,可为结构地震扭转效应的工程计算和设计提供参考。
Eccentric distance of a structure has great influence on aseismic performance of the structure. Detailed and analysis on seismic response of stiffness eccentric structure and mass eccentric structure is made. The momentum differentiating equation of coupling between the translation and torsion of single layer of asymmetric structure under earthquake is established. By adopting Rayleigh damping model and using time-history analysis （Wilson-θ method）, the linear elastic analysis of the structure is made, and the earthquake response and dynamic characteristics of the structure model are calculated under different asymmetric rates. The valuable conclusions are suggested, which can supply references to engineering calculation and design of structural torsional response under earthquake.
出处
《建筑结构》
CSCD
北大核心
2005年第11期33-35,共3页
Building Structure
关键词
平扭耦合
偏心率
刚度偏心
质量偏心
时程分析法
coupling
translation
torsion
eccentricity
ratio
stiffness
quality
time-history analysis
