中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2010, Vol. 29 ›› Issue (2): 171-173.

• •    下一篇

桥梁抗震设计中滑移挡块作用机理

刘荣灿1,王克成2,唐红梅1,陈洪凯1   

  1. 1.重庆交通大学岩土工程研究所,重庆 400074;2.重庆市交通旅游投资集团有限公司,重庆 400021
  • 收稿日期:2009-11-24 修回日期:2009-12-25 出版日期:2010-04-15 发布日期:2015-01-22
  • 作者简介:刘荣灿(1984—),男,湖北武汉人,硕士研究生,主要从事桥梁与地震灾害研究。E-mail:liurongcan163@163.com。
  • 基金资助:
    国家自然科学基金项目(50678182);四川省公路交通科技基金项目(2008002)

Mechanism of Sliding Block in Bridge Seismic Designing

LIU Rong-can1,WANG Ke-cheng2,TANG Hong-mei1,CHEN Hong-kai1   

  1. 1.Institute of Geotechnical Engineering,Chongqing Jiaotong University,Chongqing 400074,China; 2.Chongqing Traffic & Tourism Investment Group Co.Ltd,Chongqing 400021,China
  • Received:2009-11-24 Revised:2009-12-25 Online:2010-04-15 Published:2015-01-22

摘要: 基于能量耗散理论及地震动力响应分析,研究了不同地震荷载水平下滑移挡块及桥跨结构承载变化趋势,分 析结果说明,滑移挡块在地震荷载下依靠滑移产生摩擦阻力消耗一部分地震力,不会使桥跨结构产生过大刚度而 将巨大地震冲击力反馈给下部桥墩及桩基,同时挡块将桥梁破损控制在一定范围内,能量大部分由挡块承担,导致 主体结构受损较小,受损严重的挡块在震后也较容易进行快速修复。

关键词: 桥梁工程, 挡块, 地震, 能量耗散, 滑移隔震

Abstract: Based on energy dissipation theory and seismic dynamic response analysis this paper studied on the variation trends of sliding block and the bridge span structures bearing under the different levels of seismic loading. The results revealed the sliding block relying on silpping generated friction force for consumption part of the seismic load in the earthquake, so the bridge span structures does not make more rigidity to generate huge earthquake force that feedback to the lower part of the piers and pile foundation,while sliding block controlled the bridge damage within a certain range,the block took on largely energy,causing the main structure small damage,more damaged block was carried up quick fix easily after the earthquake.

Key words: bridge engineering, block, earthquake, energy dissipation, sliding isolation

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