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《Journal of Sichuan University(Engineering Science Edition)》 2007-02
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Elastic Nonlinear Damage Model of Soil Expressed by Double Scalar

LEI Xiao-zhang1,HE Si-ming2,TANG Xue-wen3 (1.State Key Lab.of Hydraulics and Mountain River Eng.,Sichuan Univ.,Chengdu 610065,China;2.Inst.of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China;3.General Monitoring Center for Soil and Water Conservation,Chongqing 401147,China)  
An elastic nonlinear damage model of soil was presented according to the deformation property of soil.The soil was considered as a double scalar combining,the one is G material which flexible matrix is only relate to shear modulus of soil,the other is E material which flexible matrix have only a connection with elastic modulus of soil.Defining double scalar to describe soil damage,respectively,using equivalent strain principle to establish elastic damage constitute relationship,respectively,through mergeing to attain elastic damage constitute equation of soil and obtain the evolution equation based on triaxial test,an elastic nonlinear damage model was presented.The model was applied to calculate foundation settlement and compared with tested results.The results showed that the model is rational.
【Fund】: 国家重点基础研究发展计划973计划资助项目(2003CB415202-3);; 国家自然科学基金资助项目(40572158)
【CateGory Index】: TU43
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