[1]张为.水平双向地震激励下隔震桥梁地震反应分析[J].防灾科技学院学报,2018,20(01):32-40.
 Zhang Wei.Seismic Response Analysis of Isolated Bridge under BidirectionalHorizontal Earthquake[J].JOURNAL OF INSTITUTE OF DISASTER PREVENTION,2018,20(01):32-40.
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水平双向地震激励下隔震桥梁地震反应分析
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《防灾科技学院学报》[ISSN:1673-8047/CN:13-1377/P]

卷:
第20卷
期数:
2018年01期
页码:
32-40
栏目:
目次
出版日期:
2018-03-31

文章信息/Info

Title:
Seismic Response Analysis of Isolated Bridge under Bidirectional Horizontal Earthquake
作者:
张为
北京市市政工程设计研究总院有限公司,北京100082
Author(s):
Zhang Wei
Beijing General Municipal Engineering Design & Research Institute Co., Ltd, Beijing 100082,China
关键词:
隔震支座 水平双向激励 地震反应 简化模型 数值计算
Keywords:
isolation bearing horizontal bidirectional excitation seismic response simplified model numerical calculation
分类号:
TU391
文献标志码:
A
摘要:
铅芯橡胶支座和摩擦摆支座是最常见的桥梁隔震构件,它们被广泛应用于隔震桥梁设计当中。针对这两种类型的支座,推导了其简化计算模型。引入合理的计算假定后,对整桥计算方程进行了分析。以某四跨连续桥梁为例,采用数值分析的方法计算了水平双向地震激励下隔震桥梁的地震反应。结果表明,采用了隔震支座的桥梁与普通非隔震桥梁相比其上部结构的加速度、桥墩的内力值均有所降低,支座的滞回位移消耗了大量的地震能量,有效减小了桥梁的整体反应。
Abstract:
As the most common bridge isolation components, the lead rubber bearing and the friction pendulum system are widely used in the design of isolated bridges. In this paper, the simplified calculation model of the two types of bearings is derived. After introducing the reasonable calculation assumptions, we analyzed the calculation equation of the whole bridge system. Then, taking a fourspan continuous bridge as an example, we calculated the seismic response of isolated bridge under bidirectional earthquake excitation by numerical analysis method. The calculation results indicate that, compared with the ordinary nonisolated bridges, the acceleration of the superstructure and the internal force of the bridge with isolated bearing are reduced, and the hysteretic displacement of bearings dissipates a lot of seismic energy, which reduces the overall response of the bridge.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-01-05 作者简介:张为(1980—),男,硕士,高级工程师,主要从事桥梁工程设计与研究。
更新日期/Last Update: 2018-03-30