土钉支护设计的修正条分法

Modified Finite Slice Method for Designing of Earth Nail Timbering

本文对土钉支护这种新的挡土技术提出了极限平衡的设计方法，并给出寻找临界滑动面及相应安全系数的算法；分析了支护参数和土层分布对安全系数的影响；设计计算结果与国外几种方法进行了比较，给出了安全系数的建议值。

Designing method by using ultimate equilibrium for the new retaining technique with earth nail is suggested and the algorithm for acquiring critical sliding surface and corresponding safety factor are also giyen. The impacts of timbering parameter and soil distribution on safety factor are analyzed. Proposed value of safety factor is given after comparison among calculation result and several methods used abroad.