| 斜拉索风雨激振水线的超声波测试研究 |
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| 引用本文： | 陈文礼,李惠,李凤臣.斜拉索风雨激振水线的超声波测试研究[J].地震工程与工程振动,2009,29(1). |
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| 作者姓名： | 陈文礼 李惠 李凤臣 |
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| 作者单位： | 1. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090
2. 哈尔滨工业大学,能源科学与工程学院,黑龙江,哈尔滨,150090 |
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| 基金项目： | 国家杰出青年基金项目(50525823);;国家自然科学基金项目(90815022;90715015;50738002) |
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| 摘 要： | 斜拉索风雨激振是在风和雨联合作用下的大幅值振动，斜拉索表面水线的形成和振荡是其发生风雨激振的一个重要原因。本文利用超声波传播和反射原理，建立一套适应于斜拉索表面水线监测的超声波测试系统，对水线特征进行定量的分析研究。在风洞中再现斜拉索的风雨激振，在测量斜拉索风雨激振响应的同时，测量得到斜拉索表面水线的振荡时程，分析了水线振动幅值与平衡位置，并得到上水线振荡频率与斜拉索风雨激振的频率相等。
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| 关 键 词： | 斜拉索 风雨激振 超声波测试系统 水线 |
An ultrasonic transmission thickness measurement system for rivulet on the stay cable under rain-wind induced vibration |
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| CHEN Wenli,LI Hui,LI Fengchen.An ultrasonic transmission thickness measurement system for rivulet on the stay cable under rain-wind induced vibration[J].Earthquake Engineering and Engineering Vibration,2009,29(1). |
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| Authors: | CHEN Wenli LI Hui LI Fengchen |
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| Institution: | 1.School of Civil Engineering;Harbin Institute of Technology;Harbin 150090;China;2.Schoolof Energy Science and Engineering;Harbin 150001;China |
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| Abstract: | During simultaneous occurrence of wind and rain,the large amplitude rain-wind induced vibration(RWIV) may appears,and the water rivulets forming and oscillating around the cable surface of cable-stayed bridges are the key role for the RWIV occurrence.This paper develops an ultrasonic transmission thickness measurement system(UTTMS),which is capable of measuring the time-dependent spatial distribution of water rivulets vibrating around the surface of the cable when the RWIV is reproduced in the wind tunnel t... |
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| Keywords: | stay cable rain-wind induced vibration ultrasonic transmission thickness measurement system rivulet |
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