Static Analysis Of Interaction Of Lime-soil Compaction Pile-soil-pile With Feed Canal

The use of lime-soil compaction pile is a simple, economic and effective methodfor processing collapsible loess foundation. It has been widely used in recent years inhydraulic structure engineering. In order to have a system comprehensiveunderstanding for lime-soil compaction pile foundation in Yintao water supply projectwater diversion culvert engineering in Gansu city of Dingxi Province. Based on thesummarization of hydraulic structure engineering foundation for years, consideringthe current specification, combined the theory of pile-soil interaction and finiteelement analysis method, Based on large finite element analysis software ANSYS,this article build a model of single lime-soil compaction pile and soil in a dark canal.In the course of modeling, this paper first considered the3d model of pile-soil-pilesystem, then focused on the problem of the contact between the pile-soil-pile. Finallyanalyzed the model under vertical load with static method of the nonlinearanalysis.Specific as follows:1、 The introduction of the contact element. Used numerical simulation,established computation model with ANSYS, selected Drucker-Prager elastic-plasticmodel as soil constitutive model for this model, and choose3D surface-surfacecontact made up with Targe170and Contacl73as contact element of this model.2、Summarized the calculate result of finite element model, validated that thecontact element of zero thickness can do better qualitative simulation in regularpattern of load transfer for pile-soil-pile, and pile group’s sedimentation etc.3、Compare single pile with pile group. Compare displacement and stress ofsingle with pile group under the same load and material parameters, got theconclusion, which is because of pile group effect, displacement and stress of singlepile are larger than pile group’s.4、Analysis influencing factors of pile group settlement. By way of changemodel’s parameter values, such as material properties of pile and soil、diameter ofpile、length of pile、distance between piles etc. Analysis the results, obtain some regular. These rules can provide some reference for the design and construction ofsimilar building in the local.