摘要
目前国内外大多数规范中推荐或者强制性规定滑坡稳定性分析采用极限平衡法。由于极限平衡法本身的局限性,存在诸多不合理之处,如何对其进行改进使之更加合理已成为岩土工程中的重要课题之一。针对岩质滑坡存在明显的软弱滑动带的特点,提出了有限元计算过程中不同滑动带的处理方法,结合工程中常用的不平衡推力传递法,给出了滑坡稳定性的有限元分析方法,将其应用于芡草沱滑坡,并与基于刚体极限平衡原理的不平衡推力传递法的计算结果进行了比较,表明其计算方法可靠,可直接应用于实际工程。
The limit equilibrium methods, recommended or prescribed compulsorily in many engineering codes at home and abroad are used to evaluate rock landslide stability. Because of the localization of limit equilibrium, there are lots of inconsequence about them. Therefore, how to improve limit equilibrium methods is one of the most important tasks in geo-technical engineering. Considering obvious weak slip zone occurring within rock landslide, the authors bring forward the different slip zone analysis methods during the calculation of finite element, and present the method combining the finite element method with non-equilibrium push transmission method used often in engineering. The method applied is used to calculate Qiancaotuo landslide stability, whose result is compared to that of non-equilibrium push transmission method based on limit equilibrium theory of rigid body. The comparison indicates that the proposed method is reliable, and can be used direct in engineering.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第11期1786-1790,共5页
Rock and Soil Mechanics
基金
国家科技攻关-西部开发科技行动项目(No.2001BA091A37)。
