Analysis of Influence of Non-uniformity of Stratum Thickness on Stability of Foundation Pit Supporting Structure
In this paper,a simulation model of foundation pit supporting structure is established to simulate and analyze the changes of horizon-tal displacement,bending moment and earthmoving pressure of foundation pit pile with pile depth under uniform and non-uniform conditions.The results show that the horizontal displacement of pile remains unchanged at first and then decreases rapidly with the increase of pile depth.The horizontal displacement of pile top is the largest and the displacement of pile end is the smallest.With the increase of pile depth,the ben-ding moment of pile body first increases(0～6 m),then decreases(6～8 m)and then basically maintains the same.The soil pressure around pile increases with the increase of pile depth.With the progress of construction,the horizontal displacement of pile top increases continuously,but it has little effect on the horizontal displacement of pile end.The bending moment of pile body increases continuously,and the soil pressure around pile decreases continuously.
Foundation pit engineeringFormation thicknessNon-uniformitySupporting structureStability
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