基于ANSYS的重力坝建基面等效应力计算

Equivalent stress calculation for gravity dam foundation surface based on ANSYS

采用ANSYS进行重力坝坝体应力分析时,坝踵、坝趾等角缘部位存在应力集中现象,转化为等效应力可以有效地避免这个现象,但ANSYS没有提供专门的等效应力计算模块。本文基于ANSYS软件计算重力坝应力,采用VB可视化编程直接访问ANSYS数据库,结合等效应力计算公式实现对重力坝建基面等效应力计算,并通过算例验证了其实用性、有效性与快捷性。

There exists corner stress concentration at the positions such as dam heel and dam toe when conducting gravity dam body stress analysis with ANSYS.Conversion to equivalent stress is an effective solution,but ANSYS does not provide specific equivalent stress calculation module.The author introduced a solution to calculate gravity dam stress with ANSYS,access to database of ANSYS by VB visual programming before conducting equivalent stress calculation for gravity dam foundation surface with corresponding formulas.A calculation example was also presented to demonstrate the solution is practical,effective and efficient.