Shake Table Test of Cable-Stayed Bridge Subjected to Non-Uniform Excitation
Shake Table Test of Cable-Stayed Bridge Subjected to Non-Uniform Excitation
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DOI：
10.1016/j.proeng.2011.07.117
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Chengyu Yang;M. Cheung
中科院分区：
文献类型：
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作者：
Chengyu Yang;M. Cheung
介绍了一座大跨度斜拉桥模型在非一致激励下的振动台试验。原型为双层斜拉桥，主跨430米，两侧边跨160米。本文设计并建造了一套新颖的双振动台试验系统。根据相似原理设计了1：120原型桥模型，并进行了动力试验。为了研究非一致激励对不同结构形式的影响，试验中考虑了两种塔梁连接形式。本研究使用SMART-1地震记录。介绍了斜拉桥模型在等输入和变输入下的试验结果，并进行了相应的讨论。
The shake table test of a long span cable-stayed bridge model subjected to non-uniform excitation is presented in this paper. The prototype is a double-deck cable-stayed bridge with a main span of 430m and side spans of 160m on either side. An innovative dual shake table testing system is designed and constructed for the purpose of this study. The design of 1:120 model of the prototype bridge based on laws of similitude for dynamic testing is also presented in this paper. In order to study the effect of non-uniform excitation on different structural form, two types of tower-girder connection are considered in the testing. The earthquake records from SMART-1 are used in this study. Testing result of cable-stayed bridge model subjected to identical input and varying input is reported and the corresponding discussion is given.