| 大跨度桥梁主梁涡激振动影响因素研究进展 |
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| 引用本文： | 代希华,鲜荣.大跨度桥梁主梁涡激振动影响因素研究进展[J].公路,2012(6):14-21. |
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| 作者姓名： | 代希华 鲜荣 |
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| 作者单位： | 广东省公路建设有限公司 广州市 510600 |
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| 摘 要： | 现代大跨桥梁跨度更大、结构更轻柔、自振频率较低且密集,在较低风速下主梁易发生涡激振动现象。涡激振动是一种带有自激、自限特性的非线性振动,影响涡激振动响应的因素较多如雷诺数效应、紊流特性及主梁断面形式等。介绍了近期大跨度桥梁主梁涡激振动影响因素的研究进展,为抗风设计及抑振措施提供参考。
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| 关 键 词： | 大跨度桥梁 涡激振动 雷诺数效应 紊流特性 |
Advancement of Research on Influence Factors of Vortex-Induced Vibration (VIV) of Long Span Bridge Main Girder |
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| DAI Xi-hua
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XING Rong.Advancement of Research on Influence Factors of Vortex-Induced Vibration (VIV) of Long Span Bridge Main Girder[J].Highway,2012(6):14-21. |
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| Authors: | DAI Xi-hua XING Rong |
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| Institution: | DAI Xi-hua,XING Rong(Guangdong Road Construction Limited Company,Guangzhou 510600,China) |
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| Abstract: | The modern long span bridges become more and more long,light and flexible.And their natural frequencies are low and densely distributed.So,vortex-induced vibration(VIV)is easy to occur under comparative low wind speed.VIV is one kind of nonlinear oscillation with characteristics such as self-exciting and self-limiting.There are a few factors which affect VIV including Reynolds number effects,turbulence characteristics and cross-section shape of girder,etc.Based on research of VIV in the near future,the advances in VIV influence factors research of long span bridge blunt girder are introduced.Consequently,the reference for wind resistance design on VIV of long span bridge girder is given. |
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| Keywords: | long span bridge Vortex-Induced Vibration Reynolds number effects turbulence characteristics |
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