摘要
对大甘坪粘土进行卸荷路径下的三轴试验,确定用于边坡开挖稳定分析的计算参数。对边坡开挖作非线性有限元分析,探讨边坡变形的大小和分布、塑性区的扩展形态、滑移面的形成、发展直至整体破坏的演变过程,以确定合理的滑移面位置。采用Janbu的普遍条分法计算边坡的安全系数,对边坡开挖的稳定性进行评价。
The behaviors of Daganping clays are obtained under the unloading stress-path by triaxial tests and the goal is to quantify the parameters for stability analysis on slope excavation. A non-linear finite element analysis for stability of slope excavation is established. The results provide a systematic description of the whole process,including deformation behaviors,extension of plastic zone,formation and evolution of slip surface, and failure in slope during excavation. The location of slip surface is determined by the results from the finite element analysis,and the Janbu slice method is used to calculate the safety factors of slope stability. The stability of slope excavation is estimated according to calculating results.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第6期843-847,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
交通部科技攻关项目资助(850211)。
关键词
边坡开挖
稳定性
有限元
极限平衡
slope excavation,stability,finite element,limit equilibrium
