土钉加固边坡的最小势能稳定分析方法

Stability analysis method of soil nail reinforced slope based on minimum potential energy principle

针对土钉加固的多地层边坡,提出了一种基于最小势能原理,通过分析系统势能与虚位移来计算边坡安全系数的稳定性分析方法。通过与极限平衡法结果进行对比,并对结果进行讨论,验证了所提方法的合理性。计算结果表明,该方法与Bishop法、Janbu法的分析结果较为一致。该方法无需划分条块及迭代,计算过程相对于极限平衡法与有限元法来说更为简便,便于在岩土工程中推广应用。

Aiming at the multi - stratum slope reinforced by soil nails, a stability analysis method based on the principle of minimum potential energy is proposed to analyze the system potential energy and virtual displacement and calculate the safety co- efficient. To verify its reliability, the method is applied to a specific example. The result calculated by the method is in line with that of Bishop method and Janbu method. No division and iteration are needed in the method, and its computation process is more simple and convenient in comparison with that of limit equilibrium method and finite element method, so it is applicable to practi- cal engineering.