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) ›› 2013, Vol. 32 ›› Issue (增1): 848-851.DOI: 10.3969/j.issn.1674-0696.2013.sup.1.29

• 桥梁结构分析 • 上一篇    下一篇

大跨度悬索桥冲击系数研究

王小松,崔建功   

  1. 重庆交通大学桥梁系,重庆400074
  • 收稿日期:2013-02-12 修回日期:2013-03-12 出版日期:2013-06-30 发布日期:2015-03-12
  • 作者简介:王小松(1977—),男,湖北公安人,副教授,博士,主要从事桥梁动力方面的研究。E-mail:xiaosongw2010@163.com.
  • 基金资助:
    重庆交通大学( 桥梁) 结构工程重点实验室开放基金项目( CQSLBF-Z10-1) ; 重庆市教育委员会基金项目( KJ080413)

Impact Coefficient of Long-Span Suspension Bridge

Wang Xiaosong,Cui Jiangong   

  1. Department of Bridge Engineering,Chongqing Jiaotong University,Chongqing 400074,China
  • Received:2013-02-12 Revised:2013-03-12 Online:2013-06-30 Published:2015-03-12

摘要: 以重庆青草背长江大桥为工程背景,基于桥梁静力效应等效的原则针对规范车道荷载逆向反推得到桥上车辆 的布置,开展不同车辆速度、路面粗糙度情况下的车辆-桥梁耦合振动分析,得到桥梁各关注项目的冲击系数,评价 现行规范冲击系数取值的适应性。研究结果表明:现行规范中的冲击系数取值对于大跨度悬索桥的部分内力效应 偏于不安全。

关键词: 大跨度桥梁, 冲击系数, 车桥耦合

Abstract: Based on the equivalent principle for static response of bridge,car distribution was determined according to the lane load of current specification,in the engineering background of Chongqing Qingcaobei river bridge. Car-bridge coupling analysis was then performed under various running speeds and road roughness. And the impact coefficients of various correlative programs of the bridges were obtained. The adaptability of the impact coefficients of the current specification was evaluated. The results show that impact coefficients of current specification are inclined to be dangerous for certain member forces of long-span suspension bridge.

Key words: long-span bridge, impact coefficient, car-bridge coupling

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