考虑结构分缝条件下堆石坝面板损伤的有限元分析

Finite Element Analysis of the Face Slab Damage in Concrete Face Rockfill Dam considering Structural Joints

为了研究水下冲击波对堆石坝面板的损伤效应,以面板分缝为考虑重点,对常规100 m级的混凝土面板堆石坝进行数值模拟,从损伤量、能量的角度进行了分析。模拟结果表明:考虑垂直缝对于模型是有必要的,它将使混凝土面板的损伤更集中于中间坝段并影响面板中各部分能量分布。面板分段的宽度影响面板的破坏形态,但对于面板单元损伤比影响相对较小。

The damage effect of underwater explosion shock wave on the face slab of a 100 m level conventional concrete face rockfill dam is studied with numerical simulations from the perspective of damage and energy considering the structural joints.The results show that it is necessary to consider the vertical joints of the face slabs in the simulation model,which make the damage of the concrete face slabs more concentrated in the middle dam section and affect the energy distribution of each part of the slabs.The width of the slab segment affects the failure mode of the slabs,but has a relatively small effect on the damage ratio of the slab element.