Numerical Simulation Analsys Of Pile-Soil Interaction

With the high-speed contsruction of city and the erection of high-rises,the cost of foundation improvement is doubling.Moreover,the pile foundation is more damanding,this article based on the interaction of pile and soil, explore the transmission mechanization of mechanics in the pile-soil interaction system, try to find a theory basis for the foundation's supporting design and settlement controlment.Establishing numrical model of pile-soil interaction system,numerical method is used to analyze reasonably interaction foundation and pile,and calculate stress and deformation.Utilized general FEM software ANSYS to establish mechanical model and solve.Based on the nodal mechanics theory and generalized displacement method,equations the pile is simulated with the beam element are derived. Because pile-soil interaction affect internal force and deformation of pile,which make the qusetion more complex,it is important to select properly interface element to describe the mechanics behavior between them,Merits and demerits of kinds of interface element are analyzed deeply in this article,and on the base of theory in possession it is derived that thin interaction element of Yao Weiming has good compatibility,Because of complex behavior of soil,it is more important to choose a properly constitutive relation to simulate the behavior of soil,The common constitutive models are introduced in the article.Choosed the generally utlized model—Duncan-Chang model.Utlized the general FEM calculate software ANSYS to calculate a model,simply analyze it's mechanical behavior.