Research On Support Design And Deformation Prediction Of Sanlihe Deep Foundation Pit In Nanyang City

The deep foundation pit of Sanlihe Orthopedic Hospital is located in Nanyang city,Henan province.According to the local geological and hydrological data,as well as the characteristics of relatively close foundation pit to the building,complex surrounding environment and large excavation depth,the traditional single support structure may not be able to complete the construction work safely,effectively and quickly.In view of the above reasons,through upstream and downstream of the segment foundation pit supporting forms of analysis and calculation,the characteristics of geology,hydrology and surrounding environment,combined pile support scheme determined by comparing the analysis and calculation,and combined with FLAC 3D computer simulation analysis of construction scheme is optimized,the future of deep foundation pit supporting provide certain reference calculation simulation.The main contents and conclusions of this paper are as follows:1.Based on the analysis of the geological and hydrological data of the foundation pit in The Orthopedic Hospital section of Nanyang City,combined with the structural characteristics of the surrounding buildings and the existing supporting structure types in the Sanli river,the supporting scheme suitable for the foundation pit was proposed after calculation.2.Through the calculation and design of the support scheme,draw the on-site construction drawing,formulate the project monitoring scheme,and collect the deformation data of the foundation pit during the project construction.3.Through the comparison and analysis of the monitoring data and the numerical simulation results of the foundation pit deformation during excavation,the deformation of the foundation pit during excavation is predicted,which is in good agreement with the actual measurement.4.The numerical simulation can be used to guide and optimize the field construction.