In the analysis of reinforced soil slope

the effect of reinforcing materials is considered as an equivalent additional stress acting upon the slip surface.The formulas for computing the factor of safety of reinforced soil slope are presented.An extension of the numerical simulation for critical slip field（CSF） is made.Then

a numerical scheme is proposed for calculating the critical slip field of reinforced slope based on the force equilibrium.The position of critical slip surface of arbitrary shape and the minimum factor of safety are given in several examples and the comparisons of the critical slip surfaces and the factor of safety are made between slopes before and after reinforcement.The influences of factors

such as horizontal width

length and strength of geosynthetics on reinforced soil slope stability are studied.