| 空间变化地震激励下大跨度桥梁地震反应分析 |
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| 引用本文： | 史志利,周立志,李忠献. 空间变化地震激励下大跨度桥梁地震反应分析[J]. 特种结构, 2003, 20(4): 71-74,79 |
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| 作者姓名： | 史志利 周立志 李忠献 |
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| 作者单位： | 1. 天津大学建筑工程学院,300000
2. 天津市市政工程设计研究院,300051 |
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| 摘 要： | 强震发生时由于受行波效应、部分相干效应和局部场地效应等因素的影响,大跨度桥梁地面各支承处所受激励并不相同,按多点激励的模式进行地震反应分析较为合理。本文对天津市快速轨道交通工程中1座4跨预应力混凝土连续刚构桥进行了多点激励地震反应分析,并与一致激励下动力时程分析的计算结果进行了比较,对该4跨预应力混凝土连续刚构桥的工程建设具有直接的指导意义。
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| 关 键 词： | 行波效应 随机地震动场 连续刚构桥 地震反应分析 |
Seismic Response Analysis for Continuous Rigid-framed Bridges under Multi-support Excitation |
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| Shi Zhili Zhou Lizhi Li Zhongxian Tianjin University,, Tianjin Municipal Engineering Design Institute. Seismic Response Analysis for Continuous Rigid-framed Bridges under Multi-support Excitation[J]. Special Structures, 2003, 20(4): 71-74,79 |
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| Authors: | Shi Zhili Zhou Lizhi Li Zhongxian Tianjin University Tianjin Municipal Engineering Design Institute |
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| Affiliation: | Shi Zhili Zhou Lizhi Li Zhongxian Tianjin University,300000, Tianjin Municipal Engineering Design Institute,3000051 |
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| Abstract: | For continuous rigid-framed bridges , seismic excitation at the support is different because of traveling wave effect, incoherence effect and site effect. So the more rational method for seismic response analysis should be performed considering multi-support excitation. In this paper, a four-spans continuous rigid-framed bridge is analyzed based on multi-support excitation, and compared with the result under the coincidence earthquake excitation. This presents direct instruction to the construction of the bridge. |
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| Keywords: | Traveling wave effect Random earthquake ground motion Continuous rigid-framed bridge Seismic response analysis |
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