| 不同索径拉索风雨激励稳定性影响试验研究 |
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| 引用本文： | 常颖,罗维,赵林,葛耀君.不同索径拉索风雨激励稳定性影响试验研究[J].同济大学学报(自然科学版),2016,44(10):1482-1489. |
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| 作者姓名： | 常颖 罗维 赵林 葛耀君 |
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| 作者单位： | 同济大学 土木工程防灾国家重点实验室，上海 200092,同济大学 土木工程防灾国家重点实验室，上海 200092,同济大学 土木工程防灾国家重点实验室，上海 200092,同济大学 土木工程防灾国家重点实验室，上海 200092 |
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| 基金项目： | 国家“九七三”重点基础研究发展计划（2013CB036300）;国家自然科学基金项目（91215302、51178353、51222809）;交通运输部应用基础研究项目（2013319822070） |
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| 摘 要： | 在实验室条件下采用人工模拟降雨成功重现了两种直径拉索的风雨激振现象,系统研究了风速、雨强、结构阻尼比等参数对风雨激振的影响以及螺旋线对拉索振动的抑制作用.试验表明,不同折算风速下拉索大幅振动的机理存在一定差异:在较高折算风速下拉索振动更类似限幅的准驰振振动;在低折算风速下拉索的振动与尾流中的低频涡关系更密切,即是一种涡致振动.
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| 关 键 词： | 拉索 风雨激振 人工降雨试验 螺旋线 |
| 收稿时间： | 2015/11/18 0:00:00 |
| 修稿时间： | 2016/8/23 0:00:00 |
Experimental Study on Aaerodynamic Stability of Rain wind Induced Vibration of Stay Cables of Different Diameters |
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| CHANG Ying,LUO Wei,ZHAO Lin and GE Yaojun.Experimental Study on Aaerodynamic Stability of Rain wind Induced Vibration of Stay Cables of Different Diameters[J].Journal of Tongji University(Natural Science),2016,44(10):1482-1489. |
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| Authors: | CHANG Ying LUO Wei ZHAO Lin and GE Yaojun |
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| Abstract: | Rain wind induced vibration of cables is a type of vibration with large amplitude and low frequency. The phenomenon of rain wind induced vibration of cables of two different diameters is successfully re produced under simulated raining condition through wind tunnel test. The effects of several main factors on the characteristics of rain wind vibration and spiraled wires countermeasure for mitigation of the vibration are investigated. The results indicate that the mechanism of vibrations with different reduced velocities is different. Vibration with high reduced velocity is more like a type of galloping, while vibration with low reduced velocity is more related to vortex induced vibration. |
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| Keywords: | cables rain wind induced vibration artificial rainfall test spiraled wires |
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