| 高精度风雨模拟环境下拉索风雨激振试验研究新发现 |
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| 引用本文： | 许林汕,葛耀君,赵林. 高精度风雨模拟环境下拉索风雨激振试验研究新发现[J]. 土木工程学报, 2011, 0(5): 86-93 |
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| 作者姓名： | 许林汕 葛耀君 赵林 |
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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; |
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| 基金项目： | 国家自然科学基金重点项目(90715039); 科技部国家重点实验室基础研究项目(SLDRCE08-C-02) |
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| 摘 要： | 拉索风雨激振是一种在风雨共同作用下发生的拉索大幅低频振动,现有人工降雨风雨激振试验无法准确模拟自然降雨的多种特性,难于实时再现风雨介质耦合环境拉索气动失稳现象。开发高精度人工降雨模拟装置,可对降雨强度进行精细连续调节,较为准确模拟雨滴大小、能量、均匀度等自然降雨的特性,合理地再现风雨联合作用条件下拉索风雨激振过程;系统研究风速、雨量以及风雨联合作用对拉索风雨激振的影响,揭示了拉索在低风速大雨量、高风速小雨量时,风雨激振发生规律和特点。
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| 关 键 词： | 拉索 风雨激振 人工降雨模拟 风雨耦合作用 |
Experimental study of rain and wind induced vibration of stay cables using high precision rain simulation system |
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| Xu Linshan Ge Yaojun Zhao Lin. Experimental study of rain and wind induced vibration of stay cables using high precision rain simulation system[J]. China Civil Engineering Journal, 2011, 0(5): 86-93 |
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| Authors: | Xu Linshan Ge Yaojun Zhao Lin |
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| Affiliation: | Xu Linshan Ge Yaojun Zhao Lin(State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | The rain-wind induced vibration(RWIV) with wind effect is a type of vibration of stay cables with large amplitudes.The current artificial rainfall could not simulate the characteristics of natural rainfalls precisely and could not realize the coupling effect in real-time.A high precision artificial raining machine which can precisely simulate the size of droplets,intensity,energy and uniformity of natural rain was developed with a wind tunnel facility.The phenomenon of RWIN of a cable model was successfully... |
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| Keywords: | cable rain-wind induced vibration artificial rainfall the coupling effect of rain and wind |
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