摘要
对边坡稳定性分别采用按极限平衡法、有限元强度折减法进行二维分析,通过对比计算结果来验证强度折减法分析的准确性与可行性。针对边坡开挖与加固及隧洞开挖的三维效应,采用三维弹塑性有限元强度折减法分析计算边坡的稳定性,计算分析了开挖完成、支护完成条件下边坡安全系数、位移分布、主应力分布、等效塑性应变区和潜在滑动面。结果表明,支护加固可较大提高边坡的稳定安全系数,三维强度折减法分析在岩土工程领域具有明显优势。
Firstly adopt limit equilibrium method and strength reduction method to carry through two-dimensional analysis of slope stability, and contrast analysis result to validate veracity and feasibility of strength reduction method. Secondly contraposing the three-dimensional influence of slope excavation, reinforcement and tunnel excavation, adopt three-dimensional elastoplastic Fb2M strength reduction method to analyse slope stability, analyse the safety factor, E-equivalent strain, displacement distribution and major stress distribution. The result indicates that reinforcement measure may obviously improve .safety factor of slope stability, and three-di- mensional strength reduction method is obviously preponderant in rock and soil engineering domain.
作者
马波
顾生泉
葛鸿辉
Ma Bo Gu Shengquan Ge Honghui(Shanghai Nuclear Engineering R ＆ D Institute, Shanghai 200933, Chin)
出处
《岩土工程技术》
2016年第4期193-198,共6页
Geotechnical Engineering Technique
基金
上海市科学技术委员会资助
资助课题编号为13DZ2250200
关键词
强度折减法
稳定性分析
安全系数
strength reduction method
stability analysis
safety factor
