基于强度折减有限元法的堤防边坡稳定敏感性分析  

Stability Sensitivity Analysis of Embankment Slope Based on Strength Reduction Finite Element Method

作　　者：张从从 肖艳 刘晨[3] 袁波 ZHANG Cong-cong;XIAO Yan;LIU Chen;YUAN Bo(Huaihe River Control Project Construction Administration of Huaihe River Commission,Bengbu 233001,China;China Water Huaihe Planning and Design Research Co.,Ltd.,Hefei 230601,China;The Huaihe River Commission of the Ministry of Water Resources,P.R.C.,Bengbu 233001,China;Henan Province Water Conservancy First Engineering Bureau Group Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]淮河水利委员会治淮工程建设管理局,安徽蚌埠233001 [2]中水淮河规划设计研究有限公司,安徽合肥230601 [3]水利部淮河水利委员会,安徽蚌埠233001 [4]河南省水利第一工程局集团有限公司,河南郑州450000

出　　处：《水电能源科学》2025年第4期217-220,共4页Water Resources and Power

基　　金：国家重点研发计划(2019YFD1001903)。

摘　　要：为探讨堤防边坡相关参数对边坡稳定性的影响,以某堤防边坡为例,将数值模拟和数理统计法相结合,基于强度折减有限元法用ABAQUS有限元软件计算出边坡安全系数,采用正交设计法选取具有代表性的边坡系数、内摩擦角、粘聚力、弹性模量4个边坡参数作为影响因素进行搭配组合试验,每个因素上下浮动固定值,设置出4个水平变量进行极差分析和单因素敏感度分析,研究4个因素对边坡稳定的影响程度。结果表明,粘聚力、内摩擦角、边坡系数、弹性模量对堤防边坡稳定性影响程度依次降低,粘聚力越大,堤防边坡越稳定;内摩擦角越大,堤防边坡越稳定;边坡系数越大,堤防边坡越稳定;弹性模量取值越大或越小时堤防边坡安全系数反而下降,取中间值时堤防边坡安全系数最大。在今后的堤防治理中,应按边坡参数对边坡稳定性影响程度综合考虑设计增强边坡稳定性的方案,研究成果可为类似堤防治理工程提供参考。In order to explore the impacts of the related parameters of the embankment slope on the stability of the slope,taking a certain embankment slope as an example,the numerical simulation and mathematical statistics method are combined.The ABAQUS finite element software is used to calculate the slope safety factor based on the strength reduction method.The orthogonal design method is used to choose the representative slope coefficient,internal friction angle,adhesion,and elastic modulus as influencing factors for combination test.Each factor floats up and down the fixing value,and setting up four horizontal variables for the range analysis and the single factor sensitivity analysis to study the impact of four factors on slope stability.The redults show that the impact of adhesion,internal friction angle,slope coefficient,elastic modulus on the stability slope decreases in turn.The greater the adhesion,the more favorable the slope stability;The greater the internal friction angle,the more favorable the slope stability;The greater the slope coefficient,the more favorable the slope stability;The greater or smaller the elastic modulus,the safety factor of the embankment slope is decreased.When the middle value is taken,the safety factor of the embankment slope is the maximum.In the future embankment treatment,comprehensive consideration should be given to design the plan to enhance the stability of the slope according to the impact of the slope parameters.The research results can provide a reference for similar embankment treatment projects.

关 键 词：强度折减有限元法 边坡稳定性 正交试验 敏感性分析 极差分析 

分 类 号：TV871.1[水利工程—水利水电工程]