In order to study the influence of foundation pit excavation of cantilever support structure on adjacent double piles,indoor model test was carried out,the additional stress and additional deformation of adjacent double piles were analyzed,and numerical simulation research under different influencing factors was carried out.The re-sults show that with the increase of foundation pit excavation depth,the additional stress and additional deformation of pile foundation both show an increasing trend,and the front pile is more affected than the rear pile.Further nu-merical simulation shows that the additional stress and deformation of pile foundation change with cohesion and sup-port stiffness:when cohesion increases within 8kPa,the bending moment and horizontal displacement of pile body show a decreasing trend,and the reduction trend slows down significantly after cohesion exceeds 8kPa;the increase of support stiffness has a certain effect on reducing the bending moment of pile body,but it is not significant e-nough,and it has a significant effect on reducing the horizontal displacement of pile body.
model testadditional stressadditional deformationnumerical simulation
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