Analysis of deformation control of deep excavations based on integration of retaining structure and foundation
Taking a deep foundation pit project in the Nanjing area as the background,through the analysis of field measurement data and three-dimensional finite element numerical simulation,the stress and deformation of the soil and supporting structure before and after the integrated design were explored.The results show that:the numerical simulation results are roughly consistent with the actual monitoring re-sults,effectively confirming the accuracy of the model.After the integrated design,the rebound curve of the soil at the bottom of the founda-tion pit presents a wavy shape,with the maximum rebound at the center,and the settlement amounts of surrounding buildings is significantly reduced.Meanwhile,the integrated design reinforced the support points of the supporting structure,reducing the horizontal displacement of the supporting structure by 34.18％,and significantly reducing the axial force of the internal support.
Supporting structureDeep foundation pitIntegrationSettlementStructural deformation
万方数据
维普
