Abstract
In order to evaluate the accuracy of strength reduction method using FEM, the safety factors of the uniform clay slope and sand slope are investigated by Fellenius’s method, Bishop’s method using traditional limit equilibrium method and strength reduction method respectively. The limit equilibrium method is carried out based on the code for foundations in port engineering and the FE analysis is based on Plaxis3D. The results show that the safety coefficient obtained by strength reduction method of FEM is larger than that obtained by limit equilibrium method and the errors are 6.03% and 1.61% for clay slope and 8.54% and 3.99% for sand slope.
Highlights
The limit equilibrium method is the main method for the stability analysis of the slope, which is based on the Coulomb’s and Ranking’s earth pressure
In 1916, the Swedish method is proposed by Fellenius and Taylor[1], which is the earliest method for the slope stability analysis
In 1955, Bishop[2] proposed another simplified method based on the Swedish method in which the arcshape slide surface and the equilibrium of the moment are kept while the interaction between two strips is considered
Summary
The side slope comes into being artificially or naturally and its destructional form is usually slide or collapse of the slide. The reason of destruction can be attributed to two categories: the equilibrium of the stress state of the slope is disturbed by external actions; the strength of the slope soil is reduced by external influence. The limit equilibrium method is the main method for the stability analysis of the slope, which is based on the Coulomb’s and Ranking’s earth pressure. During the analysis of the slope stability the plane strain condition is usually assumed and the sliding surface is regarded as artificial arc surface in early researches. The strength index of soil is reduced simultaneously until there is slide surface at the limit equilibrium state
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
