【作者】 张瑞君； 张文芳；

【Author】 Zhang Ruijun;Zhang Wenfang;College of Architecture and Civil Engineering,Taiyuan University of Technology;

【机构】 太原理工大学建筑与土木工程学院；

【摘要】 针对仅由天然橡胶支座与铅芯橡胶支座够成隔震层的基础隔震结构,根据地震能量在结构中的分配和耗散,建立罕遇地震下的能量平衡方程,并推倒出设计用能量谱与加速度反应谱之间的关系,进而建立用基于我国抗震规范反应谱的基础隔震层的最大水平位移预测式、基底剪力最大值预测式以及各楼层剪力预测值公式。最后以某8层基础隔震结构为仿真对象,选用适当的人工地震波和天然地震波来进行时程分析,结果表明各地震反应预测值具有较好的精度,可以为基础隔震结构的设计提供理论依据。更多还原

【Abstract】 For base isolation structure that isolation layer formed by natural rubber bearings and LRB,according to the distribution and dissipation of seismic energy in the structure. Establishing energy balance equation under rare earthquake,and deriving the relationship between the energy spectra of earthquake wave with acceleration response spectrum,thereby establishing the maximum horizontal displacement prediction formula of base isolation layer,the maximum base shear prediction formula as well as the floor shear value prediction formula. Finally,an 8- layer structure with base isolation is introduced as example,choosing appropriate artificial seismic waves and natural seismic waves for time-history analysis. Comparative results showed that the earthquake response prediction values were precise. It can provide a reference for the design of base isolated structure.更多还原