Numerical Simulation Research For Stress And Distortion Of Pilc-anchor Support Structure In The Deep Foundation Project

Since the1980s, a lot of deep foundation engineering chooses pile-anchor structure,which has high efficiency, economic advantages. Although so far, the pile-anchorstructure has been widely used, but this supporting structure still exists the situation ofunstable problems. The example analyses of numerical simulations in large deepfoundation excavation are less, so this paper taking the advantages of finite elementnumerical simulation method in the study of the structure stress and deformation, hascarried on the plane and3D simulation by using ADINA software on deep foundationengineering of Shenyang Summer Palace. Firstly this paper summarizes the plane modelof the characteristics and change trend about pile deformation and axial force, and thenon1/4pit3D model simulation results are analyzed and summarized, in considering thetime-space effect of foundation excavation, analysis the whole displacement changesituation, the support structure and soil on the stress distribution characteristics in thefoundation excavation, and summarizes supporting structure change of the horizontaldisplacement and the changes of the axial force in the direction of foundation X、Y,and proves that the simulation model and theoretical deformation analysis results areconsistent and ideal in large foundation excavation. Finally, the plane、3D simulationresults and the measured results are compared, and concludes that the3D numericalsimulation results is more close to reality and more dominant. Based on the pile-anchorsupporting structure force and deformation analysis of the deep foundation engineering,it is concluded that the deformation regularity of support system and the anchor system,and we hope that it is a very good reference for engineering design and construction.