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对6个多箱式渡槽槽身刚性测压模型进行了风洞试验研究,分别模拟了满槽、空槽以及不同风攻角的试验工况。根据试验结果得到了槽身模型的静风三分力(阻力、升力和扭矩)系数,讨论了模型风压分布以及三分力系数的变化规律。试验结果表明:(1)多箱式渡槽槽身绕流更趋近于钝体绕流;(2)槽身风荷载主要表现为风阻力;(3)阻力系数在总体趋势上随着槽截面宽高比的增加而减小。试验结果可为多箱渡槽的抗风研究与设计提供初步的参考。
Wind tunnel tests were conducted on the rigid multi-tank aqueduct model for six multi-tank aqueducts, and the experimental conditions of full tank, empty tank and different angles of attack were simulated. According to the test results, the coefficient of the third component (resistance, lift and torque) of the static body of the tank body model is obtained. The variation of the wind pressure distribution and the coefficient of the third component of the model are discussed. The experimental results show that: (1) Multi-box aqueduct body flows closer to the bluff body around the flow; (2) The wind load on the body mainly shows wind resistance; (3) Aspect ratio increases and decreases. The test results can provide a preliminary reference for wind resistance research and design of multi-tank aqueduct.