摘要
首先利用拉格朗日有限差分法计算得到边坡开挖后的应力应变状态,然后通过滑面应力分析边坡的整体稳定状态,不仅可得到传统的稳定安全系数,而且可得到边坡的变形与受力特征。针对大连某高边坡工程实例,通过极限平衡法与数值分析法,分别得到原始自然边坡、开挖无支护边坡、预应力锚索加固边坡的整体稳定安全系数。工程实践证明,采用有限差分法和滑面应力分析法可得到高边坡工程的变形值与稳定安全系数,值得在高边坡工程中推广应用。
Based on the Fast Lagrangian Analysis Method,the stress-strain transfer mechanism of the excavated slope is obtained.Then,the excavated slope’s integral stability is calculated by the slip surface stress analysis method.And the safety coefficient and deformation are obtained.By comparison of limit equilibrium method and the slip surface stress analysis based on the Fast Lagrangian Analysis Method,the high slope engineering projects can be reinforced and supported by the prestressed anchor.The process of this new analysis method can be easy to use in practical high slope engineering projects.
出处
《工程勘察》
CSCD
北大核心
2011年第1期25-28,共4页
Geotechnical Investigation & Surveying
关键词
高边坡
变形与稳定
安全系数
有限差分法
滑面应力分析
high slope
stability and deformation
safety coefficient
finite difference method
slip surface stress analysis method
