The flexual deformation of casing in a horizontal hole is caused not only by the uniform transverse load from dead weight, but also by the axial load, and the existence of initial bent if any.
水平井套管柱的挠曲变形，不仅受自重引起的横向均布载荷的影响，而且还受轴向力的影响，同时还可能有初弯曲。
When the ratio of axial stiffness and lateral stiffness is small, most of the horizontal load was borne by the lateral force of piles.
当轴向刚度与侧向刚度的比值很大，基础水平荷载主要由桩轴向力承担；
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