An analytical solution for the inner soil impedance of saturated soil to a horizontally vibrating large-radius pipe pile was presented. Based on the porous media theory and the assumption that the vertical normal stress is zero, the closed solution of the inner soil impedance of the saturated soil to the movement of the large-diameter pipe pile is obtained. This analytical solution considers the influence of saturated soil parameters on the impedance of the core soil of large-diameter pipe piles. Through numerical examples, the variation law of the inner soil impedance with pile radius, pile length, dimensionless frequency, compression coefficient, effective permeability coefficient, and porosity was analyzed and the pile radius corresponding to effective inner soil impedance is determined.

中文翻译：

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内饱和土对水平振动大直径管桩的阻抗

提出了饱和土内土阻抗对水平振动大半径管桩的解析解。基于多孔介质理论和竖向法向应力为零的假设，得到饱和土的内土阻抗对大直径管桩运动的闭解。该解析解考虑了饱和土参数对大直径管桩芯土阻抗的影响。通过数值算例，分析了桩径、桩长、无量纲频率、压缩系数、有效渗透系数、孔隙率等内土阻抗的变化规律，确定了有效内土阻抗对应的桩半径。