上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (05): 677-681.

• 交通运输 • 上一篇    下一篇

大跨径人行桥人致振动舒适性评估及减振措施

 钱骥, 孙利民   

  1. （同济大学 桥梁工程系， 上海 200092）
  • 收稿日期:2010-10-09 出版日期:2011-05-30 发布日期:2011-05-30

Comfort Evaluation and Vibration Reduction Design of  Long Span Footbridges

 QIAN  Ji, SUN  Li-Min   

  1. (Department of Bridge Engineering, Tongji University, Shanghai 200092, China)
  • Received:2010-10-09 Online:2011-05-30 Published:2011-05-30

摘要： 阐述了人行桥的人致振动理论，在考虑人桥相互作用影响的条件下，建立了人行荷载的力学模型，并结合国内外相关研究的成果，提出了大跨径人行桥人致振动舒适性评估指标.同时，以国内某大跨径人行桥为例，介绍了人行桥舒适性评估过程，考虑到该桥的重要性，进行了基于调频质量阻尼器的减振措施预案设计.结果表明，该人行桥将不会出现超越人行舒适性的人致振动.
 

关键词: 人行桥, 人行荷载, 人致振动, 舒适性评估, 减振设计

Abstract: The fundamentals of pedestrianinduced vibration of footbridges were introduced, and a mechanics model of pedestrianinduced forces was presented under the condition of considering the pedestrianbridge interaction. According to the current research of long span footbridges, two comfort evaluation indexes of pedestrianinduced vibration were proposed. At the same time, a long span footbridge was used as an example to demonstrate the process of comfort evaluation. Considering the importance of this footbridge, a prescheme of vibrationreduction was designed based on tuned mass damper (TMD). The result illustrates that in this footbridge there is no pedestrianinduced vibration which exceeds comfort index.

Key words: footbridges, pedestrianinduced forces, pedestrianinduced vibration, comfort evaluation, vibration reduction design

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