| 开口截面斜拉桥涡激共振风洞试验及减振措施研究 |
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| 引用本文： | 张志田,卿前志,肖 玮,陈政清.开口截面斜拉桥涡激共振风洞试验及减振措施研究[J].湖南大学学报(自然科学版),2011,38(7):1-5. |
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| 作者姓名： | 张志田 卿前志 肖 玮 陈政清 |
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| 作者单位： | 湖南大学风工程试验研究中心,湖南长沙,410082 |
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| 基金项目： | 国家自然科学基金资助项目(90915002) |
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| 摘 要： | 对某大跨开口截面斜拉桥进行节段模型风洞试验,测试了主梁成桥状态的气动性能.试验结果表明,该桥主梁在设计风速范围内出现了明显的竖弯以及扭转涡激共振现象.参数化的试验研究表明,该桥的涡激共振现象在相当广泛的阻尼比范围内均存在,即使将竖弯以及扭转阻尼比提高到1％以上仍然存在明显的涡激共振现象,且振动幅值仍超过规范允许值.为了...
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| 关 键 词： | 开口截面 斜拉桥 涡激共振 减振措施 |
Vortex-induced Vibration and Control Method for a Cable-stayed Bridge with Open Cross Section |
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| ZHANG Zhi-tian,QING Qian-zhi,XIAO Wei,CHEN Zheng-qing.Vortex-induced Vibration and Control Method for a Cable-stayed Bridge with Open Cross Section[J].Journal of Hunan University(Naturnal Science),2011,38(7):1-5. |
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| Authors: | ZHANG Zhi-tian QING Qian-zhi XIAO Wei CHEN Zheng-qing |
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| Abstract: | The aerodynamic performances of a long-span cable-stayed bridge in its completion state,which has a deck girder of open cross section,were investigated with sectional model tests in wind tunnel.Experiment results have shown that the deck of the bridge concerned suffers remarkable vortex-induced resonances within the designed wind velocity,both vertical and torsional.Parametric experiment study has shown that this vortex-induced resonance exists in an extensive scope of structural damping ratios,with amplitu... |
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| Keywords: | open deck cross section cable-stayed bridges vortex-induced resonance vibration control method |
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