基于有限元强度双折减系数法的非均质边坡稳定性分析  

Double strength reduction method for heterogeneous slope stability analysis based on a finite element method

作　　者：王恒泰 Wang Hengtai(School of Civil Engineering and Architecture,Kunming University of Science and Technology,Kunming Yunnan 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《山西建筑》2025年第8期63-68,72,共7页Shanxi Architecture

摘　　要：边坡稳定性作为岩土工程中的热点问题,其分析结果的准确性直接关系到工程安全与人民生命财产安全。传统强度折减法被广泛应用于边坡稳定性分析中,然而该方法以相同的速率折减土体的抗剪强度参数(黏聚力c和内摩擦角φ)难以准确表征土体的实际破坏过程。为提高边坡稳定性分析的准确性和可靠性,本研究提出采用有限元强度双折减系数法来评估非均质边坡的稳定性。将强度双折减系数法所得结果与极限平衡法及传统强度折减法的结果进行对比,结果显示最大相对误差不超过2%,这验证了强度双折减系数法在非均质边坡稳定性分析中的有效性和适用性。The stability of slopes is a critical issue in geotechnical engineering,and the accuracy of its analysis results directly impacts the safety of life and property for relevant personnel,holding significant engineering importance.Traditional strength reduction methods are widely used in slope stability analysis;however,these methods reduce the shear strength parameters cohesion c and internal friction angleφat the same rate,unable to accurately reflect the actual failure process of the soil.To enhance the accuracy and reliability of slope stability analysis,a finite element method with double strength reduction coefficients is proposed to assess the stability of heterogeneous slopes.Comparing the results obtained from the double strength reduction coefficient method with those from limit equilibrium methods and traditional strength reduction methods reveals an error within±2%.This validates the effectiveness and applicability of the double strength reduction coefficient method in analyzing the stability of heterogeneous slopes.

关 键 词：边坡稳定性 双折减系数法 非均质 有限元 

分 类 号：TU413.62[建筑科学—岩土工程]