关键词: 闸门槽, 塑性损伤, 位移载荷, 拉裂破坏, 剪切破坏, 承载力

Abstract: To ensure the rationality of sluice gate slot design, aiming at the shortcomings of the shear stability analysis of gate slot design, we established a 3D numerical model for a gate slot using the concrete plastic damage model provided by ABAQUS software. By the model, we researched the whole process from the initial loading to completely failure of the gate slot under the conditions of unreinforced and reinforced respectively. The results show that for the unreinforced gate slot under the effect of displacement loading, first tensile crack damage occurs at the inside corner, then shear damage occurs along an oblique plane; reinforcement can improve the bearing capacity of the gate slot, but its effect is limited, meanwhile the gate slot does not have a risk of whole shear damage even in unreinforced condition. The comparison between the FEM and theoretical calculation results verifies the rationality of this model.

Key words: gate slot, plasticity damage；displacement load； tension failure；shear failure；bearing capacity