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本文导得了按Winkler假设范围内轴向与横向力同时作用下等截面均质桩基挠曲的微分方程。给出了桩轴侧向位移、转角、弯矩及剪力的基本方程组的解。指出轴向力对柔性桩受力变形的影响程度是与桩身的压应变,桩身材料和土的弹性性质以及桩身横截面的几何形状和尺寸有关,并对桩顶为自由端时在横向集中力和集中弯矩作用下的柔性极,在不计轴向力的影响而按经典理论所得的解提出了一些重要的修正。
In this paper, we derive the differential equations of deflection of homogeneous cross-section pile foundation under the simultaneous action of axial and transverse forces in the range of Winkler. The solution of basic equations of lateral displacement, rotation angle, bending moment and shear of pile shaft is given. It is pointed out that the influence of axial force on the deformation of flexible piles is related to the compressive strain of the piles, the elastic properties of the piles and the soil as well as the geometry and size of the pile cross-section, Lateral concentration and focus under the action of bending moment flexible pole, without considering the impact of axial force and the classical theory derived some important amendments made.