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为研究船闸软土基坑边坡中桥梁双桩基础的桩土相互作用复杂力学行为,计及渗流作用、滑坡推力、桩侧摩阻力、轴力效应及桩间土等因数影响,采用“m”法模拟桩土相互作用,根据力和力矩平衡条件建立桩基础控制微分方程,建立微分方程的二阶精度差分方程组,数值模拟基桩位移及内力。理论桩顶位移与现场监测桩顶位移吻合较好,验证了该文中理论分析方法的有效性,该理论分析方法可做实际工程设计与研究参考方法。
In order to study the complicated mechanical behaviors of pile - soil interaction of double - pile bridge foundation in the soft soil foundation pit slope, and considering the seepage action, landslide thrust, frictional resistance, axial force and soil between piles, m "method is used to simulate pile-soil interaction. Based on the equilibrium conditions of force and moment, the pile foundation control differential equation is established. Second-order differential equations of differential equations are established. The displacement and internal force of pile are numerically simulated. The theoretical pile top displacement is in good agreement with the on-site monitoring pile top displacement, which verifies the validity of the theoretical analysis method in this paper. The theoretical analysis method can be used in practical engineering design and research reference method.