Finite Element Analysis of Time-varying Response of Adjacent Bridge Pile Foundation Induced by Soft Clay Excavation
In order to optimize the structure of bridge pile foundation,a simulation model of bridge pile foundation during foundation pit exca-vation was established and verified by numerical simulation method,and the influence of pile foundation diameter and pile length on pile settle-ment,pile axial force and pile side friction resistance during foundation pit excavation was analyzed.The results show that with the increase of pile foundation depth,the pile foundation settlement decreases continuously.With the increase of pile foundation diameter,pile foundation set-tlement becomes larger and larger.The axial force of the pile body at the top of the pile remains the same as 930 kN.When the diameter of pile foundation is less than 1m,the axial force of pile body decreases with the increase of pile foundation depth.When the diameter of pile founda-tion is greater than 1m,the axial force of pile body increases first and then decreases with the increase of pile foundation depth.The axial force of pile increases with the increase of pile foundation diameter.With the increase of pile foundation length,pile settlement decreases,pile axial force increases,and pile side friction decreases.
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