Study on the Influence of Foundation Pit Excavation Support on Soil Deformation and Simulation
In order to analyze the influence of foundation pit excavation on surrounding soil deformation in hydraulic buildings,a foundation pit excavation simulation model was established by Abaqus software to analyze the surface settlement and horizontal displacement during the exca-vation of foundation pit,and the influence of the thickness of underground diaphragm wall and horizontal support spacing on the surface settle-ment was explored.Through the analysis of the model,it is found that the relationship between the surface settlement and the boundary dis-tance of the foundation pit is consistent,showing a change law of first increasing,then decreasing and finally stabilizing.Under all excavation conditions,the horizontal displacement at the top of pile foundation basically remains unchanged,about 10 mm.With the increase of pile depth,the horizontal displacement of pile body increases first and then decreases.In conclusion,increasing the thickness of the diaphragm wall and reducing the spacing of horizontal supports can effectively reduce the settlement of the surrounding surface and the horizontal displace-ment of the pile.
Foundation pit engineeringSupporting structureNumerical analysisSoil deformationSettling capacity
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