隧道地震响应模型试验箱体设计与合理性验证  

Design and Verification of a Model Test Box for Tunnel Seismic Response

作　　者：仇文革[1] 段东亚 李冰天 胡辉[1] 代勇[1] 

机构地区：[1]西南交通大学土木工程学院,交通隧道工程教育部重点试验室,成都610031

出　　处：《现代隧道技术》2016年第6期129-136,共8页Modern Tunnelling Technology

基　　金：国家自然科学基金重点项目(51038009);国家自然基金高铁联合基金(U1434206)

摘　　要：结构动力试验是探究结构地震响应机理的重要研究手段之一。目前在研究隧道工程结构地震响应机理的动力试验中所采用的模型箱主要有刚性模型箱、柔性模型箱以及层状剪切模型箱,但这三种模型箱因各自的结构特点都具有一定的缺陷和不足。为了达到更好的试验效果,文章提出一种新型试验模型箱——动静耦合模型箱,并通过振动台动力试验验证该模型箱的有效性。基于该模型箱提出了一种研究隧道工程结构地震响应的新方法——拟静力法。通过动力试验和拟静力法试验结果的对比,认为拟静力法试验可以一定程度替代动力试验,既拓宽了该模型箱的试验方式,同时也拓宽了隧道地震响应模型试验的研究方法。A structural dynamic test is an important research technique for evaluating structural seismic response mechanisms. The types of model boxes used to research the seismic response mechanisms of underground structures are mostly rigid, flexible and layered-shear, which have some defects and shortcomings. A new type of model box that is a coupling of static and dynamic modes and a new test method named the pseudo-static method are intro- duced in this paper and their effectiveness is validated by a dynamic test with a shaking table. A pseudo-static method is proposed to study the seismic response of tunnel structures. By comparing the results of the dynamic test and the pseudo-static test, it is determined that it is possible for the pseudo-static method to replace the dynamic test to some extent, which broadens both the testing method for this model box and the studying method for a model test of the seismic responses of tunnels.

关 键 词：隧道 地震响应 动静耦合 动力试验 拟静力法 

分 类 号：U452.28[建筑科学—桥梁与隧道工程]