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探讨一种土钉支护边坡稳定分析方法，为设计提供较为科学合理的分析手段。基于土坡稳定分析常用的瑞典条分法，考虑土钉的极限拉力作用，建立稳定安全系数公式，可用于基坑土钉支护设计。提出用几何控制多数确定最危险滑动面的计算机算法，通过计算表明：安全系数是几何控制参数的单峰函数。用黄金分割法分步对几何控制多数进行优化，提高了计算速度。通过与国外方法比较和工程实例验算，确定安全系数的取值范围，一般工程安全系数应为１．２－１．５。具有较后的工程应用价值。
This paper discusses a method for stability analysis of slope supported by soil nailing, which provides a scientific and reasonable analytical method for design. Based on the Swedish bar method commonly used in soil slope stability analysis, considering the ultimate pulling force of soil nails, the formula of stable safety factor is established, which can be used in the design of soil nailing for foundation pit. A computer algorithm for determining the most dangerous slip surface by geometric control is proposed. The calculation shows that the safety factor is a unimodal function of geometric control parameters. Using the golden section method to optimize the geometric control step by step, the calculation speed is improved. Through comparison with foreign methods and checking of engineering examples to determine the value of the safety factor range, the general engineering safety factor should be 1.2-1.5. With a later project value.