带人工雨线的拉索在风激励下的响应

顾明; 刘慈军; 徐幼麟; 项海帆

带人工雨线的拉索在风激励下的响应

1.
同济大学土木工程防灾国家重点实验室, 上海 200092;
2.
香港理工大学土木与结构工程系, 香港

基金项目: 国家自然科学基金资助项目(50178049);国家杰出青年科学基金;教育部“高等学校骨干教师资助计划”资助项目

详细信息

作者简介:
顾明(1957- ),男,江苏兴化人,教授,博士,长江学者.

中图分类号: U442
计量
- 文章访问数: 1981
- HTML全文浏览量: 113
- PDF下载量: 879
- 被引次数: 0
出版历程
- 收稿日期: 2000-06-03
- 修回日期: 2002-04-11
- 刊出日期: 2002-10-15

Response Characteristics of Wind Excited Cables With Artificial Rivulet

1.
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, P R China;
2.
Department of Civil & Structural Engineering, Hong Kong Polytechnic

摘要

摘要: 通过在风洞中对一具有可调动力特性、雨线位置和风向角的带人工雨线的拉索模型进行了试验,研究了拉索的风雨激振特性.试验结果和其他研究人员的结果进行了仔细对比,得到了一些新的结论,澄清了过去的一些模糊认识.结果表明,带人工雨线的水平索在风向为零时的响应可以用Den Hartog驰振机制来解释,而风向不为零时,拉索表现为限速振动或限速和驰振的混合型振动.
- 拉索 /
- 人工雨线 /
- 风洞 /
- 驰振 /
- 限速振动
Abstract: A wind tunnel investigation of response characteristics of cables with artificial rivulet is presented. A series of cable section models of different mass and stiffness and damping ratio were designed with artificial rivulet. They were tested in smooth flow under different wind speed and yaw angle and for different position of artificial rivulet. The measured response of cable models was then analyzed and compared with the experimental results obtained by other researchers and the existing theories for wind-induced cable vibration. The results show that the measured response of horizontal cable models with artificial rivulet could be well predicted by Den Hartog's galloping theory when wind is normal to the cable axis. For the wind with certain yaw angles,the cable models with artificial rivulet exhibit velocity-restricted response characteristics.
- cable /
- artificial rivulet /
- wind tunnel /
- galloping /
- velocity-restricted vibration

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参考文献(13)

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