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本文对于渡槽槽体结构模型进行了风洞实验研究 ,对于矩形渡槽槽体在均匀流场和具有 1 8%湍流度的湍流场中各取三种不同的高宽比进行了风洞试验 ,测量了在槽内有水和无水两种情况下槽体各个部位的风压系数 ,从而计算得出了渡槽结构风载体型系数 .从实验的初步的结果来看 ,渡槽结构风载体型系数同近年来我国编制的桥梁抗风设计指南中类似结构物的风载体型系数比较接近 ,但是同以往在渡槽抗风设计时所使用的参数有一定的差别 .本文中得出的渡槽槽体结构的风压分布和风载体型系数 ,为渡槽结构的抗风设计提供了参考依据 .
In this paper, a wind tunnel experiment was carried out on the aqueduct structure model. Wind tunnel tests were carried out for three different aspect ratios of the rectangular aqueduct tanks in a uniform flow field and a turbulent field with a turbulence of 18% The wind pressure coefficient of each part of the tank body under both water and anhydrous conditions in the tank is calculated to calculate the wind load factor coefficient of the aqueduct structure.From the preliminary results of the experiment, In recent years, the wind load coefficient coefficient of similar structure in the bridge wind resistance design guideline compiled by our country is relatively close, but there are some differences with the parameters used in the wind-resistance design of the aqueduct in the past. The wind pressure distribution and the wind load body coefficient provide a reference for wind-resistant design of aqueduct structure.