| 基于减隔震设计的大跨度连续梁桥抗震性能评价 |
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| 引用本文： | 李贞新,刘高.基于减隔震设计的大跨度连续梁桥抗震性能评价[J].公路,2011(1). |
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| 作者姓名： | 李贞新 刘高 |
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| 作者单位： | 中交公路规划设计院有限公司; |
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| 摘 要： | 基于高烈度区的某大跨度连续梁桥(89m+170m+89m),采用非线性时程分析法进行结构动力特性及抗震性能分析。全桥均采用三维梁单元建立空间模型,对于双曲面球形减隔震支座的滞回耗能特性和自恢复功能,活动支座的摩擦耗能以及固定销剪断后的效应进行了模拟,同时模拟了阻尼器的阻尼耗能作用。研究结果表明:采用双曲面球形减隔震支座及桥台处纵向阻尼器后,结构的反应得到了很好的控制,确保了高烈度区结构的抗震安全性。
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| 关 键 词： | 大跨度连续梁桥 减隔震设计 非线性时程分析法 双曲面球形减隔震支座 活动支座 阻尼器 |
Evaluation of Seismic Performance of Long Span Continuous Girder Bridges Based on Seismic Isolation Design |
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| LI Zhen-xin,LIU Gao.Evaluation of Seismic Performance of Long Span Continuous Girder Bridges Based on Seismic Isolation Design[J].Highway,2011(1). |
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| Authors: | LI Zhen-xin LIU Gao |
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| Institution: | LI Zhen-xin,LIU Gao(CCCC Highway Consultants Co.,Ltd.,Beijing 100088,China) |
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| Abstract: | Nonlinear time history analysis method is adopted to analyze dynamic characteristics and seismic performance based on long span continuous girder bridges with spans of 89 m,170 m and 89 m in high intensity region.The good hysteretic,energy-dissipation characteristics and self-restoring ability of double curvature seismic isolation bearings are simulated as well as the friction energy-dissipation characteristics of sliding bearing and damping energy-dissipation characteristics of dampers.Analytical results i... |
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| Keywords: | long span continuous girder bridge seismic isolation design nonlinear time history analysis double curvature seismic isolation bearing sliding bearing damper |
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