淹没齿型丁坝阻力与壅水响应关系试验研究

为研究淹没齿型丁坝阻力与其壅水响应关系,利用物理水槽试验与理论分析相结合的方法,建立了淹没齿型丁坝阻力系数计算方法,其阻力系数大小主要与无量纲淹没度与相对坝长相关。进而采用动量守恒的方法构建了阻力系数与壅水效应相关联的淹没齿型丁坝壅水预测模型。通过实测数据对壅水预测模型进行验证,计算结果与水槽试验数据符合良好。研究成果可为其他形式丁坝或相关涉及建筑物阻力与壅水效应研究提供参考与借鉴。

Experimental study on relationship between resistance of submerged tooth spur dike and its backwater response

To study the relationship between the resistance of the submerged tooth spur dike and its backwater response,a method for calculating the drag coefficient of submerged tooth spur dike is established by using a combination of physical flume tests and theoretical analysis. The drag coefficient is mainly related to the dimensionless submergence degree and relative dam length. Furthermore,the method of conservation of momentum is used to construct the backwater prediction model of the submerged tooth spur dike which is related to the drag coefficient and backwater effect. The backwater prediction model is verified by the measured data, and the calculated results are in good agreement with the experimental data. The results can be used as a reference for the study of the drag and backwater effects of other types of spur dike or buildings involved.