三层地铁车站振动台试验分析  

Shaking table test analysis of three-story subway station

作　　者：景立平[1] 孟宪春[1] 孙海峰[1] 邹炎[1] 陆博迪[2] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]北京工业大学建筑工程学院,北京100124

出　　处：《地震工程与工程振动》2011年第6期159-166,共8页Earthquake Engineering and Engineering Dynamics

基　　金：中国地震局公益性行业科研专向课题项目(200808022)

摘　　要：为了探究多层地下结构地震破坏机理,进行了三层地铁车站振动台试验。试验采用微粒混凝土模型,严格按照相似比和配筋率对模型进行加筋配置。填土采用哈尔滨地铁施工挖掘出的扰动土。装土箱采用自主研制的层叠剪切箱以减小边界效应。通过对试验加速度和应变的分析可得到以下主要结论:(1)地下结构在地震中的破坏,主要是由位移控制的;(2)多层地下结构在地震中,顶层破坏最为严重,底层破坏最轻;(3)增加延性是提高地下结构抗震性能的有效方法。The shaking table test of three-story subway station is performed to study the failure mechanism of multi-story underground structure in earthquake.Particle concrete is chosen to make the testing model,and the reinforced bar is set strictly according to the similarity ratio.A large-scale shear box is developed to reduce the boundary effect.By analysis of acceleration and strain,the following conclusions are drawn：（1）The failure of underground structure in earthquake is mainly controlled by displacement.（2）As to multi-story underground structure,the uppermost story suffers the most severe damage in earthquake.On the contrary,the lowest story suffers the slightest damage.（3）Increasing ductility is an effective method to improve the seismic performance of underground structures.

关 键 词：振动台 地下结构 破坏机理 层叠剪切箱 

分 类 号：P315.93[天文地球—地震学] TU43[天文地球—固体地球物理学]