基于XFEM的预应力闸墩裂纹开裂模拟

Simulation of crack cracking of prestressed pier based on XFEM

文中基于ABAQUS平台,以国内某水电站锚块式预应力闸墩为工程背景,利用XFEM在断裂力学应用中的优势,采用虚拟裂纹模型,对泄洪闸闸墩进行了预设裂缝开裂数值模拟。研究了裂纹的产生对闸墩颈部预应力区应力、位移分布规律的影响,并判断了闸墩工作的安全性。

Based on ABAQUS platform and taking anchor block prestressed pier of a hydropower station in China as the engineering background,this paper takes advantage of XFEM in the application of fracture mechanics and adopts a virtual crack model to simulate the pre-set crack crack of spillway pier.The influence of the crack on the distribution of stress displacement in the prestressed area of the neck of the pier is studied,and the safety of the pier is judged.