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《Chinese Journal of Underground Space and Engineering》 2013-03
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Large Deformation Meshing Technology for Soil around the Driven Pile Based on ALE Method

Wang Li,Wang Shimei(College of Civil Engineering & Architecture,China Three Gorges Univ.,Yichang,Hubei 443002,China)  
The working properties of pile is one of the most uncertain problems in geotechnical engineering.The main reason is that the change of physical condition and stress state of soil around the pile caused by piling is not clear,for a numerical simulation,we should consider the large deformation,the changes in boundary conditions and the contact problems about pile and soil.The general finite element method can not solve the large deformation problem,as the simulation of the actual situation is unable properly to handle boundary conditions and interface between the pile and soil.Calculation examples show that the ALE method(Arbitrary Lagrange Euler)based on ABAQUS is effective to simulate the change of soil stress during geotechnical penetrating,and the following conclusions have been drawn: ALE method can effectively avoid the mesh distortion by Lagrangian method in finite element analysis,as well as high distortion,this method gives result consistent with the actual one,it truly reflects the Elastic-plastic deformation of geotechnical project.The ALE method of ABAQUS can be applied to penetration problems in geotechnical engineering.Having a Finite element simulation of CPT(Cone Penetration Test) based on ALE method,it will give effective explanation to the CPT results.
【Fund】: 水利部公益性行业科研专项经费(201001008);; 三峡库区三期地质灾害防治重大科研项目(SXKY3-2-1);; 三峡大学研究生科研创新基金(2012CX023)
【CateGory Index】: TU473.1
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