噪声与振动控制

›› 2011, Vol. 31 ›› Issue (5): 130-132.DOI: 10.3969/j.issn.1006-1355-2011.05.030

• 5.建筑振动与建筑声学 • 上一篇    下一篇

斜拉索风致随机振动的计算机模拟

方治华,李晨   

  1. （ 1. 内蒙古科技大学 建筑与土木学院， 内蒙古 包头 014010；2. 山西省大同县审计局， 山西 大同 037300 ）
  • 收稿日期:2010-07-30 修回日期:2011-01-18 出版日期:2011-10-18 发布日期:2011-10-18
  • 通讯作者: 方治华

Computer Simulation of Wind Induced RandomVibration on Stay Cables

FANG Zhi-hua 1,LI Chen 2   

  1. ( 1. School of Civil Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, Neimenggu China;2. Audit Bureau of Datong County, Datong 037300, Shanxi China )
  • Received:2010-07-30 Revised:2011-01-18 Online:2011-10-18 Published:2011-10-18
  • Contact: FANG Zhi-hua

摘要： 斜拉索是斜拉桥的主要受力构件之一，由于其柔度大、质量小、阻尼小和自振频率低等特点，对风荷载比较敏感，在风载作用下极易发生振动，因此有必要对这种结构风振响应进行研究。通过在斜拉索有限元模型上导入随机风荷载，用计算机模拟斜拉索的风振响应，为进一步研究风振响应的控制打下基础。该方法可以节省研究成本，提高研究效率，对斜拉桥的设计具有一定的参考意义。

关键词: 振动与波, 斜拉索, 风致振动, 位移时程, 计算机模拟

Abstract: Stay cable is one of the main components in cable-stayed bridge. Since this component has large compliance, light weight, small damp and low natural vibration frequency, the wind-induced vibration may occur very often. Thus, it is necessary to study the vibration response of the stay cable to the wind load excitation. In this paper, random wind load is introduced to the finite element model of the cable. Wind induced vibration of cables is simulated with the computer. The method is proved economic and effective. It has significance for design of the cable-stayed bridge, and provides a base for further study of wind-induced response control.

Key words: vibration and wave, stayed cable, wind-induced vibration, displacement time history, computer simulation

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