| 荆岳长江大桥附近大风特征及设计风速推算研究 |
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| 引用本文： | 文元桥,陈正洪.荆岳长江大桥附近大风特征及设计风速推算研究[J].武汉理工大学学报(交通科学与工程版),2010,34(2):306-309. |
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| 作者姓名： | 文元桥 陈正洪 |
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| 作者单位： | 1. 武汉理工大学航运学院,武汉,430063
2. 中国气象局武汉暴雨研究所,武汉,430074;武汉区域气候中心,武汉,430074 |
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| 基金项目： | 国家自然科学基金青年科学基金项目资助(批准号:40805063/D0512) |
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| 摘 要： | 利用岳阳气象站1952~2000年逐年10 min平均最大风速资料序列,对大风特征进行了分析.利用极值Ⅰ型分布曲线,推算出气象站处基本风速,结合沿江观测对比记录,通过比值法把基本风速推算到设计风速.结果表明:(1)桥位附近10 min平均年最大风速极值24.7 m/s,主导风为东北风;(2)不同重现期(100,50,30,10 a)10 m高处10 min平均年最大风速(基本风速)分别为27.6,25.4,23.8,20.2 m/s;(3)考虑5%的计算误差,桥位区不同重现期(100,50,30,10 a)10 m高处10 min平均年最大风速(设计风速)分别为29.0,26.7,25.0,21.2 m/s;(4)利用近地层风速随高度的指数变化推算出300 m以下每10 m高度层的设计基准风速.
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| 关 键 词： | 荆岳长江公路大桥 极值I型 基本风速 设计风速 |
Study on the Estimation of Designed Wind Speed for Jingyue Yangtze River Highway Bridge |
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| Wen Yuanqiao,Chen Zhenghong.Study on the Estimation of Designed Wind Speed for Jingyue Yangtze River Highway Bridge[J].journal of wuhan university of technology(transportation science&engineering),2010,34(2):306-309. |
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| Authors: | Wen Yuanqiao Chen Zhenghong |
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| Institution: | School of Navigation/a>;WUT/a>;Wuhan 430063/a>;China;Wuhan Institute of Heavy Rain/a>;China Meteorological Administration/a>;Wuhan 430074/a>;China;Wuhan Region Climate Center/a>;China |
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| Abstract: | Using the yearly series of maximum 10 min averaged wind velocity observed by Yuyang weather stations from 1952 to 2000,the gale characteristics of Yuyang weather stations was analyzed.The reference wind velocity and design wind velocity were calculated by adopting the function of Extreme I and referencing the observed wind datum along Yangtze River nearby bridge location.Several conclusions are listed as following:(1) the bridge location takes EN wind as dominant wind direction and extreme value of maxinum ... |
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| Keywords: | Jinyue Yangtze River highway bridge extreme value type I reference wind velocity design wind velocity |
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