| In the twenty-first century, with the increase of the utilization increased ofunderground space, as a result, the development of the scale of deep foundation pitengineering becomes deeper and greater. The process of the excavation of foundation pitwill inevitably cause soil displacement. So the study of foundation excavation in thedeformation of soil and the stability of supporting structure have become an importantissue, which has the extremely vital significance to predict the possible effect offoundation pit excavation.The common method for the support of foundation pit and general usage has beenintroduced. The method of analysis of soil pressure commonly is used in foundation pitengineering. ANSYS is introduced, which is the large-scale finite element analysissoftware of geotechnical engineering. Foundation pit engineering of the Tangshan timessquare is regarded as background. In the process of excavation, the analytical model offinite element of excavation and supporting engineering of foundation pit of Tangshantimes square has been established in using ANSYS. Constitutive model of Druck-Pragerhas been use in the software simulate and analyze the soil, and the six excavation offoundation pit, in order to simulate and analyze the entire process of excavation andsupport, analysis of the excavation process of pit wall soil stress, displacement, shearstress and axial force of pile and anchor.Through the analysis, the general law of horizontal displacement of soil wall offoundation pit and supporting structure stress undertook during the process of excavationand support are summed up, some guidance for design, construction and support ofsimilar foundation pit engineering are provided. |
