Comparison and Study of Safety and Stability Evaluation Methods for Building Deep Foundation Pit Slopes
In this paper,the difference between the limit equilibrium method and the finite element method in the process of strengthening is discussed.The study focused on the slope of 45° and 60°,and adopted nail reinforce-ment measures at 0°,15° and 30°.The results show that the limit equilibrium method performs better than the fi-nite element method in terms of factor of safety,critical slip surface and axial force of soil nails.The two methods show significant differences on the failure surface.The limit equilibrium method reveals that the soil nailing is sub-jected to a greater axial force at a 45°slope,while the finite element method indicates an increase in the axial force of the soil nailing at a 60° slope.In addition,factors such as nail length,soil-nail interaction and bending stiff-ness have significant effects on the stability analysis results.
soil nailingslopelimit equilibrium methodfinite element method
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