赤石特大橋山區(qū)地形橋位風特性現(xiàn)場實測
發(fā)布時間：2019-06-03 15:33
【摘要】：針對湖南郴州赤石大橋橋位的風特性進行了現(xiàn)場實測,統(tǒng)計了觀測器內(nèi)大風天數(shù)與風向情況,對大風時段沿橋軸向各測點的風速、風向、風攻角及紊流度等風特性參數(shù)進行了分析。結(jié)果表明:觀測期間橋位處存在瞬時突變風現(xiàn)象;受地形影響,風向以南北向為主,且大風時段風向為南風,風攻角變化較小;沿橋軸向個測點的平均風速、風向、風攻角變化基本一致。
[Abstract]:According to the wind characteristics of the bridge position of Chenzhou Chishi Bridge in Hunan Province, the wind speed and wind direction in the observer are counted, and the wind speed and wind direction along the axial direction of the bridge during the strong wind period are calculated. The wind characteristic parameters such as wind attack angle and turbulence are analyzed. The results show that there is an instantaneous abrupt wind phenomenon at the bridge position during the observation period, and under the influence of topography, the wind direction is mainly north-south direction, and the wind direction is south wind during the strong wind period, and the wind attack angle changes little. The average wind speed, wind direction and wind attack angle along the axial direction of the bridge are basically the same.
【作者單位】： 湖南省汝郴高速公路建設開發(fā)有限公司;湖南大學土木工程學院;
【基金】：國家自然科學基金項目(51478180)
【分類號】：U442.59
[Abstract]:According to the wind characteristics of the bridge position of Chenzhou Chishi Bridge in Hunan Province, the wind speed and wind direction in the observer are counted, and the wind speed and wind direction along the axial direction of the bridge during the strong wind period are calculated. The wind characteristic parameters such as wind attack angle and turbulence are analyzed. The results show that there is an instantaneous abrupt wind phenomenon at the bridge position during the observation period, and under the influence of topography, the wind direction is mainly north-south direction, and the wind direction is south wind during the strong wind period, and the wind attack angle changes little. The average wind speed, wind direction and wind attack angle along the axial direction of the bridge are basically the same.
【作者單位】： 湖南省汝郴高速公路建設開發(fā)有限公司;湖南大學土木工程學院;
【基金】：國家自然科學基金項目(51478180)
【分類號】：U442.59
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6 張s，
本文編號：2492032
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