Mechanism of Seismic Response of a Pc Cable-Stayed Bridge Subjected to a Long-Period Seismic Excitation
Mechanism of Seismic Response of a Pc Cable-Stayed Bridge Subjected to a Long-Period Seismic Excitation
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DOI：
10.2208/jsceja.64.982
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Shoji;J. Kitahara;A. Kojima;T. Kanakubo;K. Shimizu;Y. Sakai
中科院分区：
文献类型：
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作者：
G. Shoji;J. Kitahara;A. Kojima;T. Kanakubo;K. Shimizu;Y. Sakai
在这项研究中，阐明了长周期结构在长周期地震激励下的地震反应机理。选取了一座典型规模的预应力混凝土斜拉桥(PC斜拉桥)进行分析。首先，模拟了1999年台湾集集地震中受损的集路大桥场地的长周期地震动分量，并利用模拟的地面激励进行了非线性地震反应分析。其次，进行了一座PC模型斜拉桥的振动台试验，考虑相似律，研究了斜拉桥塔索的线性地震反应和非线性地震反应。
In this study, the mechanisms associated with the seismic response of a long-period structure when subjected to a long-period seismic excitation are clarified. A typical scale cable-stayed bridge with prestressed concrete girders (PC cable-stayed bridge) was selected for analysis. First, we simulated long-period components of the ground motion at the site of the Ji-Lu Bridge, which was damaged in the 1999 Chi-Chi, Taiwan earthquake, and the damage of the bridge was assessed by nonlinear seismic analysis using the simulated ground excitations. Second, shaking table tests of a model PC cable-stayed bridge were carried out, in consideration of the similarity law, to clarify the mechanisms involved, focusing on the linear and nonlinear seismic responses of the tower and cables.