| 索-桥动态相互作用及行波效应对斜拉桥地震反应的影响 |
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| 引用本文： | 布占宇,谢旭,郑荣跃.索-桥动态相互作用及行波效应对斜拉桥地震反应的影响[J].地震工程与工程振动,2011,31(2):82-90. |
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| 作者姓名： | 布占宇 谢旭 郑荣跃 |
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| 作者单位： | 1. 宁波大学建筑工程与环境学院,浙江,宁波,315211
2. 浙江大学建筑工程学院,浙江,杭州,310058 |
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| 基金项目： | 国家自然科学基金项目，桥梁工程结构动力学国家重点实验室开放基金，浙江省教育厅科研项目 |
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| 摘 要： | 主要研究斜拉桥地震响应中拉索与梁、塔动态相互作用和行波效应的影响,索一桥相互作用的影响是根据结构动力学中广义自由度的概念,把索的振型作为自由度来考虑,通过把索边界节点的位移和索局部振型位移叠加得到索的整体位移,行波效应是通过在不同支承点输人具有一定相位差的同一条地震动模拟.以一座斜拉桥为例进行了数值模拟和参数分析,结果...
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| 关 键 词： | 斜拉桥 地震响应 索-桥动态相互作用 行波效应 |
Study on effects of travelling waves on the seismic responses of cable-stayed bridges in consideration of dynamic cable-deck interaction |
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| BU Zhanyu,XIE Xu,ZHENG Rongyue.Study on effects of travelling waves on the seismic responses of cable-stayed bridges in consideration of dynamic cable-deck interaction[J].Earthquake Engineering and Engineering Vibration,2011,31(2):82-90. |
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| Authors: | BU Zhanyu XIE Xu ZHENG Rongyue |
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| Institution: | BU Zhanyu1,XIE Xu2,ZHENG Rongyue1(1.Faculty of Architecture,Civil Engineering and Environment,Ningbo University,Ningbo 315211,China,2.College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China) |
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| Abstract: | The dynamic cable interaction with the deck and towers as well as the travelling wave effect on the seismic responses of cable-stayed bridges is investigated in this paper.The influence of cable-deck interaction is incorporated based on the concept of generalized freedom,in which the modes of cable are treated as freedoms.The cable displacement is superposed by the boundary nodal displacement and the local modal displacement.The travelling wave effect is simulated by inputting the same earthquake wave with ... |
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| Keywords: | cable-stayed bridge seismic response dynamic cable-deck interaction travelling wave effect |
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