Finite Element Analysis Of Cantilever-anchor Plate Retaining Wall And Strength Theory Applied Research

In recent years,our highway industey is rapid development, high grade highwayconstantly extend to mountain areas, these places have eroding canyons and need highembankment and dig deep, so it must duild a large number of retaining structures. The newresearch and development of tall retaining structures have broad prospect.This paper mainlyfor the numerical analysis research of the new type cantilever-anchor plate retaining wall.In this paper,using the geotechnical finite element software z-soil.pc2D/3D analysiscantilever-anchor plate retaining wall.In the finite element calculation,using theMohr-Coulomb strength theory、twin shear unified strength theory、three shear strength theoryas a unified soil constitutive model,retaining wall and anchor plate adopt the beamelement,bar adopt truss element,the soil adopts continuum element,contact surface adoptsGoodman element,using life and death element simulate the process of construction、backfilling excavation and build up,considering the soil deformation modulus increase withdepth,nonlinear solution adopts the incremental menthod.For the following main problems onresearch:(1)Summarying the form and status of development of the retaining wall,the concept ofcantilever-anchor plate retaining wall is clearly put,analyzes its structure、the form of structureand working characteristics.(2)Using nonlinear finite element method,use the geotechnical professional finiteelement software z-soil.PC2D/3D establish the finite element model of cantilever-anchorwall.Through to simulating the construction process of cantilever-anchor plate retaining wall,to study the displacement of the retaining wall、the filled soil displacement、the settlement ofthe basal filled soil、stress analysis of floor、truss and anchor plate、soil pressure distributionand beinding moment of retaining wall and so on, with the increase of age.(3)Using Mohr-Coulomb strength theory、double shear uniform strength theory、threeshear uniform strength theory study the finite element strength reduction of the soil,get stablesafety coefficient in different strength theory and analysis stability of canilever-anchor plateretaining wall,confirm the correctness and applicable range of three shear uniform strengththeory.