Reliability Analysis of Stability of Foundation Pit Supported by Composite Soil Nailing
Based on the limit equilibrium theory and the circular slip surface method, the state equation of limit equilibrium and the calculation model of the most dangerous sliding surface for inner global stability of foundation pit supported by the prestressed anchor composite soil nailing is established with the disturbing force method. And the searching and solving method of the most dangerous sliding surface is optimized with the SLP optimization method and the simplex optimization method. Then with the mechanical parameters of soil as random variables, the reliability index of inner global stability of foundation pit is calculated with the design checking point method. Finally, a practical project is used to analyze the sensitivity of the reliability index to the coefficients of variability of all random variables.
Y. L. Zhao and W. G. An, "Reliability Analysis of Stability of Foundation Pit Supported by Composite Soil Nailing", Advanced Materials Research, Vols. 168-170, pp. 2481-2487, 2011