| 斜拉索风雨振动及制振措施的风洞试验研究 |
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| 引用本文： | 李明水,何向东. 斜拉索风雨振动及制振措施的风洞试验研究[J]. 气动实验与测量控制, 2010, 0(6): 11-15 |
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| 作者姓名： | 李明水 何向东 |
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| 作者单位： | 西南交通大学风工程试验研究中心,成都610031 |
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| 基金项目： | 国家科技支撑计划课题“特大桥梁用、高强度、耐久性缆索材料开发之子课题——新型抗风雨振桥梁缆索体系研究及产业化研究”（2007BAE15B03）资助 |
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| 摘 要： | 采用全尺寸节段模型,进行了3种不同直径光面索的风雨振动风洞试验,并在各自雨振发生的临界风速、姿态及雨量条件下,和表面附加螺旋肋条及压花后的模型,进行了对比试验,且考察了不同阻尼条件下模型的振动特性,由此探索出对抑制雨振效果较佳的斜拉索表面形式及合适的阻尼比。
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| 关 键 词： | 风雨振动 风洞试验 螺旋肋条 表面压花 附加阻尼 |
Wind tunnel investigation on rain/wind-induced vibration and its mitigation means of stay cables |
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| LI Ming-shui,HE Xiang-dong. Wind tunnel investigation on rain/wind-induced vibration and its mitigation means of stay cables[J]. , 2010, 0(6): 11-15 |
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| Authors: | LI Ming-shui HE Xiang-dong |
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| Affiliation: | (Research Centre for Wind Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Rain wind induced vibration（RWIV） tests were conducted for three kinds of diameter cable with smooth surface configuration by using prototype cable model.The critical wind speed,yaw angle and rain intensity were found for each cable while the maximum rain/wind-induced response was observed.Each cable with surface configurations of helical fillets and dimpled pattern was then tested at those critical conditions and different damping level.The means to mitigate RWIV is discussed on the basis of testing results,and cable surface configuration and appropriate damping level for mitigating RWIV are proposed. |
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| Keywords: | rain/wind-induced vibration wind tunnel test dimpled pattern helical fillet additional damping |
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