| 润扬悬索桥桥址区实测强风特性的对比研究 |
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| 引用本文： | 谢以顺,李爱群,王浩.润扬悬索桥桥址区实测强风特性的对比研究[J].空气动力学学报,2009,27(1). |
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| 作者姓名： | 谢以顺 李爱群 王浩 |
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| 作者单位： | 东南大学土木工程学院,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金，高等学校科技创新工程重大项目 |
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| 摘 要： | 2005年8月与9月期间,台风"麦莎"和"卡努"分别袭击江苏,润扬悬索桥健康检测系统(WASHMS)记录了经过桥址区的两个强风样本.通过对实测风速风向数据的分析,得到了平均风速和风向、湍流强度、湍流积分尺度、湍流功率谱密度函数等强风特性.分析结果表明,桥址区实测"卡努"台风的湍流强度比"麦莎"台风的要高,且二者均高于规范建议值;二者水平湍流功率谱密度函数与Kaimal谱均吻合得不太理想,低频段偏低,高频段偏高.最后对实测的脉动风谱离散数据进行了非线性最小二乘法拟合,得到拟合自谱曲线及相应的拟合参数,为该桥的抗风研究提供参考.
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| 关 键 词： | 悬索桥 结构健康监测系统 台风 实测强风特性 拟合谱 |
Comparison study on experimental strong wind characteristics of Runyang Suspension Bridge |
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| XIE Yi-shun,LI Ai-qun,WANG Hao.Comparison study on experimental strong wind characteristics of Runyang Suspension Bridge[J].Acta Aerodynamica Sinica,2009,27(1). |
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| Authors: | XIE Yi-shun LI Ai-qun WANG Hao |
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| Institution: | College of Civil Engineering;Southeast University;Nanjing 210096;China |
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| Abstract: | When typhoon Matsa and Khanun passed through Jiangsu during August and September in 2005,they were wholly recorded by the wind and structural healthy monitoring system(WASHMS) of Runyang Suspension Bridge(RSB).The measurement data were analyzed to obtain the mean wind velocity and direction,the turbulence intensity,the integral length of turbulence and power spectrum,etc.Analysis results show that the turbulence intensity of typhoon Khanun is larger than that of typhoon Matsa,and both of them are larger tha... |
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