采用ABAQUS构建加翼桩三维数值仿真模型,研究翼板刚度和翼板埋深对加翼桩桩身位移 、桩身弯矩 、桩身应力以及极限承载力的影响.研究结果表明:翼板刚度对加翼桩泥面处水平位移和桩身弯矩影响不大,对桩身最大应力和桩身与翼板连接处应力影响较大,当翼板刚度明显大于桩身刚度时,极限承载力受翼板与基桩连接处最大应力控制,相对刚度1.0～2.0为合理翼板与桩身刚度比;埋深对加翼桩泥面处水平位移影响较小,对桩身弯矩 、应力影响较大,加翼桩水平极限承载力随着翼板埋深Z的增大而先增大后减小,0.2D左右时最大.%ABAQUS is used to construct the three-dimensional numerical simulation model of wing - monopile to analyze the influence of wing plate stiffness and wing plate depth on the displacement of pile,pile moment,pile stress and ulti-mate bearing capacity.The results show that the wing plate stiffness has little effect on the horizontal displacement and the bending moment of the pile,but has great impact on the maximum stress and the pile-wing connection stress.When the wing plate stiffness is significantly greater than the pile stiffness,the ultimate bearing capacity is controlled by the maximum stress of the pile-wing connection,the relative stiffness of 1.0 ～ 2.0 is the reasonable wing plate and pile stiff-ness ratio.The depth of the pile has little effect on the horizontal displacement of the pile,and it has great influence on the bending moment and the stress of the pile.The ultimate bearing capacity of the wing-monopile increases first and then decreases with the increase of the depth of the wing plate Z,and the maximum is about 0.2D.
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