Analysis of drilled pile bearing capacity based on ABAQUS
Based on a case study of a drilled pile foundation project,the ABAQUS finite element analysis software was employed to establish a three-dimensional finite element calculation model for pile-soil interaction according to the Ben-modified HSS model.The influence of pile length on the bearing capacity and deformation of the drilled cast-in-place piles was investigated.Results show that before reaching the ultimate load,pile settlement exhibits a linear increase and upon reaching the ultimate load,a sudden surge in settlement occurs,accompanied by pile failure.The nature of soil layer at the top of the pile has less influence on the inflection point of the pile load-settlement curve,ultimate loading value and ultimate settlement.Pile length does not affect the overall load-bearing pattern or elastic stress-bearing performance of the foundation.Under different pile length scenarios,the trend of pile settlement with varying loads is essentially consistent.With increasing pile length,both the single-pile ultimate bearing capacity and ultimate settlement exhibit nonlinear growth,while the load range corresponding to the elastic deformation stage of the pile also expands.The slope of the curve reaches its maximum within the pile length range of 40 m to 60 m.
drilled cast-in-place pilebearing capacitynumerical simulationHSS model
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