[1]曾向红,杜东升,吴贤云.岳阳洞庭湖大桥桥位设计风速推算[J].气象研究与应用,2015,36(04):89-93.
　Zeng Xiang-hong,Du Dong-sheng,Wu Xian-yun.Wind speed calculation for the location design of Dongting Lake Bridge in Yueyang[J].Journal of Meteorological Research and Application,2015,36(04):89-93.
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岳阳洞庭湖大桥桥位设计风速推算()

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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

Title:: Wind speed calculation for the location design of Dongting Lake Bridge in Yueyang

摘要:: 利用岳阳气象站1953-2010年年最大风速观测资料,通过时距换算、高度换算及地形订正等处理,构建相当于开阔平地10m高度处10min平均年最大风速58年序列。根据极值Ⅰ型分布曲线,采用耿贝尔法计算出10m高处不同重现期(200年、100年、50年、20年、10年)基本风速,根据洞庭湖区测风塔与岳阳气象站相应时段10min平均月最大风速比值,外推得到岳阳洞庭湖大桥桥位设计风速。根据设计风速,取α=0.131,利用风速随高度变化的指数公式推算到300m以内各个高度层(70m内10m一层,70m以上间隔30m)最大风速。

Abstract:: Based on annual maximum wind speed observation data of Yueyang weather stations during 1953-2010, average annual maximum 10 min wind speed, which is equivalent to the weed speed in 10 m height opening ground, sequence of 58 years was built by the distance conversion, height conversion and topographic correction processing. Based on extremum Ⅰ distribution curve line, the different return period of (200, 100, 50 years, 20 years, 10 years) basic wind speed in 10 m high was calculated by the Gumbel method. According to 10 min average monthly maximum wind speed ratio during the corresponding time between anemometer tower and weather station in Yueyang, wind speed design for the location of Dongting Lake Bridge was extrapolated. According to the wind-speed design, alpha (0.131) was taken by using the maximum wind speed in each levels wind within 300 m ($70 m in 10 m, 70 m more than 30 m intervals) calculated by index formula of speed changing with height.

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备注/Memo:: 收稿日期:2015-05-13。
基金项目:交通运输部建设科技项目(编号:2013318798320);湖南省交通科技项目(编号:201219)
作者简介:曾向红(1962-),女,湖南长沙人,本科,高级工程师,主要从事应用气象工作,邮箱:zzxxhh@163.com。

更新日期/Last Update: 1900-01-01