针对某冲沙闸底板及闸墩出现的裂缝问题,采用非线性有限元计算来分析裂缝区域在完整、裂缝和恢复强度状态下的张开情况。通过裂缝区张开单元体积统计和修复强度敏感性分析以及应力比分析得到结论:裂缝区域材料强度修复至完整强度的50%,张开单元体积不再发生变化,应力状态基本恢复到完整状态,保证冲沙闸的正常运行。 In view of the cracks occurred in the floor and gate pier of a certain red sand sluice gate, the nonlinear finite element analysis is used to analyze the open situation of the crack area under intact, cracked and restored strength conditions. Through the statistical analysis of fracture volume and the strength sensitivity analysis and the stress ratio analysis, it is concluded that the strength of the material in the fracture region is restored to 50% of the full strength, the volume of the open cell is no longer changed, and the stress state is basically restored to the intact state, Ensure the normal operation of flushing sluice.