| 客运专线桥梁的地震能量响应分析 |
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| 引用本文： | 李宇,赵国辉,白桦,王涛.客运专线桥梁的地震能量响应分析[J].中国安全科学学报,2011,21(10). |
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| 作者姓名： | 李宇 赵国辉 白桦 王涛 |
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| 作者单位： | 长安大学公路学院旧桥检测与加固技术交通行业重点实验室,西安,710064 |
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| 基金项目： | 国家自然科学基金资助，中国博士后科学基金资助，中央高校基本科研业务费专项资金项目 |
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| 摘 要： | 在依据能量平衡原理建立的客运专线桥梁地震能量方程的基础上,考虑柔性地基效应和地震动特性的影响,利用大型有限元分析(FEA)软件ANSYS建立某客运专线双柱式桥墩的FEA模型。研究了考虑土-结构相互作用效应的客运专线桥梁进入非弹性状态后的地震能量响应以及各类能量在结构整体系统中的分配规律。分析结果表明:结构滞回耗能和阻尼耗能是客运专线桥梁消耗地震能量的主要方式,而土-结构相互作用和地震动峰值加速度(PGA)对客运专线桥梁的地震总输入能、滞回耗能、阻尼耗能有显著影响,不容忽视。
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| 关 键 词： | 客运专线桥梁 地震能量响应 柔性地基效应 滞回耗能 阻尼耗能 |
Analysis on Seismic Energy Response for Bridges of Passenger Dedicated Line |
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| LI Yu,ZHAO Guo-hui,BAI Hua,WANG Tao.Analysis on Seismic Energy Response for Bridges of Passenger Dedicated Line[J].China Safety Science Journal,2011,21(10). |
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| Authors: | LI Yu ZHAO Guo-hui BAI Hua WANG Tao |
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| Institution: | LI Yu ZHAO Guo-hui BAI Hua WANG Tao(School of Highway,Key Laboratory of Ministry of Communications for Bridge Detection & Reinforcement Technology,Chang'an University,Xi'an Shaanxi710064,China) |
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| Abstract: | The energy equations of bridges of passenger dedicated line are established based on the energy equilibrium theory.Considering the effect of flexible base effects and seismic characteristics,the FEA(Finite Element Analysis) model of one double-column pier of passenger dedicated line is established by using FEA software ANSYS.Then,the seismic energy response and its distribution rules at the nonlinear state of bridges are studied.The study results show that the seismic input energy is mainly consumed by hyst... |
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| Keywords: | bridges of passenger dedicated line seismic energy response flexible base effects hysteretic energy dissipation damping energy dissipation |
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