京唐港第四港池挡沙堤断面稳定性试验研究

摘要

Through physical section model test on breakwater of harbor basin No.4 in Jingtang Port,the instability of concrete block on the port side caused by overtopping was studied.Based on the position of instability,a series of optimized tests with different forms were also carried out,and finally the stable cross section was obtained.In addition, Holger Schtüttrumpf formula for overtopping current was applied for calculating the maximum current velocity induced by overtopping.According to the results,proper weight of block for optimized section was obtained from the physical test with reference to former test results of different current velocities corresponding to the weight of concrete block, which provided scientific foundation for optimal design.%通过京唐港第四港池挡沙堤断面物理模型试验,对越浪流冲刷挡沙堤港侧块体而失稳的现象进行了研究.根据失稳的位置进行了不同形式的优化试验.最终得到稳定的断面.同时应用HolgerSchtüttrumpf研究成果中的越浪流计算公式,计算得出最大越浪流流速值.利用该结果,参照以往研究中斜坡上流速值对应的块体稳定计算式,得出断面港侧位置具体的块体重量,为优化设计提供依据.