上海交通大学学报

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (07): 968-972.

• 建筑科学 • 上一篇    下一篇

桥墩高度和高差对双幅桥动力特性及地震响应的影响

陈炳耀1，吴永昌2   

  1. (1.同济大学 桥梁工程系， 上海 200092;2.中交第一公路勘察设计研究院有限公司， 西安 710075)
  • 收稿日期:2014-11-03 出版日期:2015-07-30 发布日期:2015-07-30

Effects of Heights and Height Differences of Piers on Dynamic Characteristics and Seismic Response of Parallel Bridges

CHEN Bingyao1，WU Yongchang2   

  1. (1. Department of Bridge Engineering, Tongji University, Shanghai 200092, China; 2. First Highway Consultants Co., Ltd, CCCC, Xi’an, 710015, China)
  • Received:2014-11-03 Online:2015-07-30 Published:2015-07-30

摘要：

摘要：  阐明了不等高双幅桥的动力特性、地震响应与桥墩高度、高差的相互关系.以一工程项目为背景，通过修改桥墩高度、高差，研究两者对结构动力特性、地震响应的影响，分析桥墩高度、高差与动力特性、地震响应的相互关系.分析结果表明，结构频率与桥墩高度、高差呈负相关关系；地震响应随桥墩高度的增大而增大，桥墩高差对其不造成影响.

关键词: 双幅桥, 高度, 高差, 动力特性, 地震响应

Abstract:

Abstract： Unequalhigh parallel bridges are different from those of conventional symmetric structures. The correlation between heights and height differences of piers to dynamic characteristics and seismic response was provided. Using a project as the background, the effects on dynamic characteristics and seismic response was studied by modifying height and height difference. The results show that the frequency is negatively correlated with heights and height differences of piers. Seismic response, which is not affected by height differences, increases with heights.
Key words：

Key words: parallel bridges, heights, height differences, dynamic characteristics, seismic response

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