基于有限元强度折减法的重力坝深层抗滑稳定安全性能研究  

Research on the Safety Performance of Deep Anti Sliding Stability of Gravity Dams Based on Finite Element Strength Reduction Method

作　　者：孙高强 Sun Gaoqiang(China Railway Tenth Bureau Group First Engineering Co.,Ltd.,Jinan,China)

机构地区：[1]中铁十局集团第一工程有限公司,山东济南

出　　处：《科学技术创新》2025年第6期205-208,共4页Scientific and Technological Innovation

摘　　要：为了提升重力坝深层抗滑稳定安全性能,本文通过介绍工程背景、重力坝失稳破坏类型以及基于有限元强度折减法的最大剪切强度允许相对位移失稳判据等内容,深入分析了重力坝在复杂地质条件下的稳定性问题。文章首先阐述了岩土体抗剪强度定律,并详细推导了任意斜截面上正应力的计算方法,进而探讨了岩土体的极限平衡条件。在此基础上,本文提出了一种新的失稳判据。研究结果表明:合理设置齿墙参数可以显著提高重力坝的抗滑稳定性,为重力坝的设计与加固提供了科学依据。In order to improve the deep anti sliding stability and safety performance of gravity dams,this article deeply analyzes the stability problems of gravity dams under complex geological conditions by introducing the engineering background,types of instability and failure of gravity dams,and the maximum allowable relative displacement instability criterion based on finite element strength reduction method.The article first expounds the law of shear strength of rock and soil mass,and derives in detail the calculation method of normal stress on any inclined section,and then explores the ultimate equilibrium conditions of rock and soil mass.On this basis,this article proposes a new instability criterion.The research results indicate that reasonable setting of tooth wall parameters can significantly improve the anti sliding stability of gravity dams,providing a scientific basis for the design and reinforcement of gravity dams.

关 键 词：有限元 强度折减法 重力坝 深层 抗滑 稳定 

分 类 号：TV223.21[水利工程—水工结构工程]