Sediment effect refers to the accumulation of slurry,fine-grained soil,and other materials at the foundation base during construction,leading to a decrease in foundation bearing capacity and an increase in settlement.In the paper,PLAXIS 3D finite element software is used to numerically simulate the pile-wall composite anchorage foundation of the Cangrong Xunjiang Bridge,the impact of different sediment thicknesses(0 cm,5 cm,10 cm,20 cm)on the internal force and deformation characteristics of the pile-wall composite anchor foundation are analyzed.The results show that as sediment thickness increases,the axial force of the pile-wall composite anchorage foundation significantly decreases,while shear force and bending moment significantly increase,and overall deformation increases.This indicates that sediment thickness has a significant impact on the bearing performance of the pile-wall composite anchorage foundation,which should be fully considered in design and construction.The research results provide an important reference for the design and optimization of related engineering projects.
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