赤石特大桥山区地形桥位风特性现场实测
发布时间：2019-06-03 15:33
【摘要】：针对湖南郴州赤石大桥桥位的风特性进行了现场实测,统计了观测器内大风天数与风向情况,对大风时段沿桥轴向各测点的风速、风向、风攻角及紊流度等风特性参数进行了分析。结果表明:观测期间桥位处存在瞬时突变风现象;受地形影响,风向以南北向为主,且大风时段风向为南风,风攻角变化较小;沿桥轴向个测点的平均风速、风向、风攻角变化基本一致。
[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.
【作者单位】： 湖南省汝郴高速公路建设开发有限公司;湖南大学土木工程学院;
【基金】：国家自然科学基金项目(51478180)
【分类号】：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.
【作者单位】： 湖南省汝郴高速公路建设开发有限公司;湖南大学土木工程学院;
【基金】：国家自然科学基金项目(51478180)
【分类号】：U442.59
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