| 大跨多塔悬索桥纵向地震碰撞反应参数研究 |
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| 引用本文： | 邓育林,彭天波,李建中.大跨多塔悬索桥纵向地震碰撞反应参数研究[J].振动与冲击,2011,30(4):205-210. |
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| 作者姓名： | 邓育林 彭天波 李建中 |
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| 作者单位： | 1.武汉理工大学交通学院，武汉，430063；2.同济大学桥梁工程系，上海 200092 |
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| 基金项目： | 国家自然科学基金资助项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 针对大跨桥梁在地震作用下伸缩缝处的碰撞现象,以一座大跨三塔悬索桥为工程背景,建立了考虑墩柱弹塑性的空间非线性碰撞模型,采用非线性时程法详细分析了碰撞刚度、碰撞初始间隙等因素对碰撞效应的影响.分析结果表明:碰撞刚度在可能范围内取值,碰撞效应的变化不明显,碰撞刚度不是敏感参数;碰撞初始间隙是一个敏感参数,其大小对于碰撞效应有一定的影响,初始间隙比的变化对主引桥相对位移和引桥梁端位移影响比较明显.
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| 关 键 词： | 地震 悬索桥 碰撞效应 碰撞刚度 初始间隙 |
| 收稿时间： | 2009-11-16 |
| 修稿时间： | 2010-1-20 |
Parametric study on longitudinal seismic pounding response for a long-span multi-tower suspension bridge |
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| DENG Yu-lin,PENG Tian-bo,LI Jian-zhong.Parametric study on longitudinal seismic pounding response for a long-span multi-tower suspension bridge[J].Journal of Vibration and Shock,2011,30(4):205-210. |
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| Authors: | DENG Yu-lin PENG Tian-bo LI Jian-zhong |
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| Affiliation: | 1. School of Transportation, Wuhan University of Technology, Wuhan 430063, China; 2. Department of Bridge Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Based on the pounding phenomenon at expansion joints of a long-span multi-tower suspension bridge,subjected to longitudinal earthquake,a complex nonlinear model considering elasto-plastic behaviors of piers and pound responses between main span and approach span was developed.The effects of some pounding parameters,such as,pounding stiffness,and initial gap at expansion joints were studied.The results indicated that the pounding stiffness is not a senstive parameter and its effect on pound responses is not ... |
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| Keywords: | earthquake suspension bridge pounding effect pounding stiffness initial gap |
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