基于 ANSYS 的拱坝三维有限元等效应力分析

有限单元法可处理多种复杂的边界条件，计算过程更严密，在拱坝应力分析中已广泛应用。通过对坝体的离散化，将坝体离散为相互作用的单元和节点进行复杂条件下的应力分析。采用 ANSYS 分析软件计算了某水库单曲浆砌石拱坝在多种荷载组合作用下的坝体应力及变形，实现了等效应力的参数化计算，并与拱梁分载法计算成果进行对比分析，进而对拱坝结构安全性进行分析评价。

Three-dimensional finite element equivalent stress analysis of arch dam based on ANSYS

Finite element method (FEM) is widely used in arch dam stress analysis because it can consider all kinds of complex boundary conditions. By discretizing the dam body into interacting elements and nodes, stress analysis under complex conditions can be carried out. However, finite element method can produce stress concentration, which limits its application. ANSYS analysis software is used to calculate the stress and deformation of a single curved mortar masonry arch dam under various load combinations, and the equivalent stress calculation is carried out. The parametric calculation of the equivalent stress is realized, and the calculation results of the arch beam load sharing method are compared and analyzed, and then the structural safety of the arch dam is analyzed and evaluated.