二维地基波阻板隔振分析  

2-D analysis of ground vibration isolation using wave impeding block

作　　者：高广运[1] 李伟[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092

出　　处：《地震工程与工程振动》2005年第2期130-135,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50178056)

摘　　要：本文采用了以薄层法层状半空间基本解答作为格林函数的边界元法,对均质弹性半空间和层状半空间中二维波阻板隔振设计进行了详细的参数分析。分析结果表明,均质弹性半空间和层状半空间内采用波阻板隔振均可取得较好的隔振效果;应保证波阻板具有合理的宽度和较小的埋深,才能得到理想的隔振效果;同时增加波阻板的厚度和模量是提高隔振效果的最有效的2种措施;此外,分层性对波阻板隔振效果也具有一定的影响。Considering the fundamental solution of stratified halfspace obtained by thin layered method as the Green function for BEM, the paper studied some parameters in the design of 2-D wave impeding block(abbreviated to WIB) isolation in homogeneous elastic halfspace foundation and stratified foundation in detail. The results indicate that the relatively good isolation effect can be got by WIB in the homogeneous elastic halfspace and stratified foundation, while the WIB has reasonable breadth and relatively small embedment depth; and increasing the thickness and modulus of WIB is a way to get a good effect of isolation.

关 键 词：粘弹性层状地基 波阻板 半解析边界元法 薄层法 土-结构动力相互作用 

分 类 号：P315.966[天文地球—地震学]