【摘要】 土钉支护稳定分析常采用圆弧条分法,即规范公式。规范公式给出的方法存在一定的不足,在考虑土钉抗拔力的基础上,给出了一种改进的Bishop条分法。在此基础上,结合工程实例比较了Fellenius、Bishop条分法、改进Bishop条分法的计算结果,利用混沌优化方法,研究了搜索范围、土层参数均质化和分条数对计算结果的影响。更多还原

【Abstract】 The standard formula for stability analysis of soil nailing used is the arc strip method including Fellenius method and Bishop method,in which the pulling out force is not considered in equilibrium of soil strip.In this paper,a modified Bishop method is brought forth,and calculation results of these three methods are compared.Using chaotic optimigation method,analysis of the of some factors including search scope,uniform of strength parameters and number of strip,which have some influence on calculation results,is made.更多还原