Scaled down model design of shaking table test of Taizhou Bridge  

作　　者：Yan Jukao Han Lei Zhao Yi Peng Tianbo 

机构地区：[1]State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

出　　处：《Engineering Sciences》2012年第3期33-37,共5页中国工程科学（英文版）

基　　金：National Science and Technology Support Program of China(No.2009BAG15B01);Key Programs for Science and Technology Development of Chinese Transportation Industry(No.2008-353-332-190);Natural Science Foundation of China(No.50708074);the Ministry of Science and Technology of China(No.SLDRCE08-B-04);Kwang-Hua Fund for College of Civil Engineering,Tongji University

摘　　要：Taizhou Bridge is the first kilometer level three-pylon two-span suspension bridge in the world and the structural complexity has significant effects on the seismic performance of the bridge. Shaking table test of Taizhou Bridge is arranged to investigate the effects of non-uniform ground motion input, collision between main and side spans and optimal seismic structural system. It's very important and difficult to design and manufacture the scaled down model of Taizhou Bridge used during the shaking table test. The key point is that the girder and pylons are very hard to be manufactured if the similarity ratio is strictly followed. Based on the finite element method (FEM) analysis, a simplified scaled down model is designed and the bending stiffness of the girder and pylon are strictly simulated, and the torsion stiffness and axial stiffness are not strictly simulated. The inner forces and displacements of critical sections, points of simplified model and theoretical model are compared by FEM analysis, and it's found out that the difference between the seismic responses is relatively small. So, the simplified model can be used to conduct the shaking table test by the FEM verification.

关 键 词：three-pylon two-span suspension bridge shaking table test stiffness equivalence simplified scaled down model FEM verification 

分 类 号：TU352.1[建筑科学—结构工程] P315.9[天文地球—地震学]