The Foundation Pit Supporting Design And Numerical Simulation Analysis Of Changchun Liwang’s Housing Estate

The deep foundation pit engineering which combination of multi-science is acomplicated engineering problem. The unique engineering nature and comprehensivenature is also an important project which researchers studying currently. How can fullprospecting, design, construction and monitoring of deep foundation pit engineering isa prerequisite to ensure the safety of foundation pit engineering.With the developing economic and the material level of people is increasing,more and more high-rise buildings emerge as the times require. The deep foundationpit engineering become the key to the future construction as the demanding forhousing and site. The difficult problems in the construction and design proposal willalso become the focus of various departments. Therefore, vigorously developing thelevel of foundation technology and the level of construction of our country shouldbe imperative under the situation.In this paper, under the background of Changchun Liwang community’sfoundation pit. Through geological prospecting data, hydrogeololgy data andbuildings structures and underground pipeline around there and other objectivefactors as selected program. Comprehensive comparison of several commonly usedsupporting program such as Pile-anchor supporting structure, Soil nailing supportingstructure, Cantilever supporting structure and so on. Eventually, ues the Pile-anchorsupporting structure to this foundation pit engineering.In determining supporting programs, choosing three kinds of supporting designmethods: limit equilibrium method; trial algorithm method and Blum method. Usingthese methods to supporting design. And using the normal stability checking softwareof geotechnical engineer-Lizheng software, Checking the overall stability andantidumping stability of this pit. Through the checking, make a consequence thesemethods are all rational.Using the analysis software of MIDAS/GTS geo technical and tunnel, namelyestablish different two dimensional model on the basis of these design methods. Beingable to see the final diagrams of horizontal displacement, vertical displacement,surface subsidence and internal forces of change from the three design programs. Through comparative analysis the displacement size, internal forces of change,construction cost of the three programs. Finally select the consequence of limitequilibrium method as the design program. Comparing the diagrams of horizontaldisplacement, surface subsidence which conclude from the limit equilibrium methodwith the test data, determine the rationality and feasibility.