大跨距仓棚结构表面风压分布特性试验研究
发布时间：2018-09-11 14:23
【摘要】：结合某一跨度82m、高度30.8m的实际仓棚工程,通过风洞试验研究了不同风向角、端部敞开或封闭的结构形式以及是否考虑周边建筑及地形等情况下仓棚表面的风荷载分布规律.研究结果表明:斜风作用下仓棚抗风更为不利,端部的敞开或封闭对仓棚结构的风荷载分布有较大影响,端部局部区域存在较为明显的风压增强现象,周边建筑及地形的存在使得仓棚表面风压的分布更为复杂.结合仓棚表面风压分布特点以及结构抗风验算的不利状态,将仓棚表面划分为5个特征区域,并给出了可用于工程抗风设计的分块体型系数建议取值.
[Abstract]:Combined with a practical silo shed project with a span of 82 m and a height of 30.8 m, the wind load distribution on the surface of the warehouse shed under different wind direction angles, open or closed ends, and whether or not the surrounding buildings and topography are considered are studied through wind tunnel tests. The results show that the wind-resistance of the silo shed is more unfavorable under the action of inclined wind, the opening or closing of the end has a great influence on the wind load distribution of the silo shed structure, and there is obvious phenomenon of wind pressure enhancement in the local area of the end part. The surrounding buildings and topography make the distribution of wind pressure on the warehouse shed more complicated. Combined with the wind pressure distribution on the surface of the silo and the unfavorable state of the wind resistance calculation of the structure, the silo surface is divided into five characteristic areas, and the suggested value of the block shape coefficient which can be used in the design of engineering wind resistance is given.
【作者单位】： 上海应用技术大学城市建设与安全工程学院;同济大学土木工程防灾国家重点实验室;
【基金】：国家自然科学基金(50878148) 上海自然科学基金(13ZR1441100)资助项目
【分类号】：TU312.1
[Abstract]:Combined with a practical silo shed project with a span of 82 m and a height of 30.8 m, the wind load distribution on the surface of the warehouse shed under different wind direction angles, open or closed ends, and whether or not the surrounding buildings and topography are considered are studied through wind tunnel tests. The results show that the wind-resistance of the silo shed is more unfavorable under the action of inclined wind, the opening or closing of the end has a great influence on the wind load distribution of the silo shed structure, and there is obvious phenomenon of wind pressure enhancement in the local area of the end part. The surrounding buildings and topography make the distribution of wind pressure on the warehouse shed more complicated. Combined with the wind pressure distribution on the surface of the silo and the unfavorable state of the wind resistance calculation of the structure, the silo surface is divided into five characteristic areas, and the suggested value of the block shape coefficient which can be used in the design of engineering wind resistance is given.
【作者单位】： 上海应用技术大学城市建设与安全工程学院;同济大学土木工程防灾国家重点实验室;
【基金】：国家自然科学基金(50878148) 上海自然科学基金(13ZR1441100)资助项目
【分类号】：TU312.1
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