作　　者： ; ; ; ;

机构地区： 东北大学资源与土木工程学院

出　　处： 《东北大学学报（自然科学版）》 2003年第11期1096-1099,共4页

摘　　要： 对橡胶隔震支座建筑采用多质点层间等效剪切模型,通过动力时程分析,研究了影响隔震层位移幅值变化的各种因素·结果表明,场地类别,地震烈度,隔震后结构基本周期,隔震层等效阻尼比是影响位移幅值的主要因素,隔震建筑在一类场地上位移幅值最小,通过调整隔震层的等效阻尼比可以有效控制位移幅值·建造在一,二和三类场地上的低层和多层规则型橡胶隔震支座建筑,通过对大量动力分析结果采用多元回归分析方法,得出罕遇地震作用下隔震层位移幅值简化计算公式,精度满足工程设计的要求· Through an equivalent interlaminar shear model with multidegree of freedom for baseisolated buildings with laminated rubber bearings, the maximum displacement of isolation layer is discussed, adopting dynamical timehistory analysis. The results show that the influencing factors on the maximum displacement of isolation layer are mainly the site classification, earthquake intensity, structural period of baseisolated building and equivalent viscous damp ratio. It was found that the amplitude of displacement of isolation layer is minimum in the site classⅠand adjusting the damp ratio can control efficiently the amplitude of displacement. By way of regression analysis, a simplified calculation formula of maximum displacement of isolation layer is provided for regular baseisolated buildings of low and multi-storey in site classⅠ,Ⅱ and Ⅲ, of which the accuracy will meet the requirements of engineering design.

关 键 词： 基础隔震建筑 夹层橡胶垫 隔震层位移幅值 时程分析 回归分析

领　　域： [建筑科学]