双参数地基推力长桩的有限差分解

Finite difference solutions of laterally loaded long-piles under double-parameter foundation

针对W inkler地基模型的不足,采用考虑剪力的双参数地基模型,建立该模型下的平衡微分方程,获得推力长桩内力和位移计算的有限差分解,编制相应的计算机程序。实例计算结果表明,本文提出的方法更符合土的受力变形特性,原理简单,分析过程简明易懂,便于编程,可以获得高精度的数值解,可有效地提高现有推力桩的设计计算水平。

In view of the shortage of the Winkler foundation model, the double parameter foundation model which consider shear force is presented, an equilibrium differential equation is developed according to this model, internal force and displacement calculation of finite difference solution is obtained, and a relative computer program has been work out. The examples show the method to be convenient and easy to be programmed,the high precision numerical solution can be obtained,the results more suitable to the stress and deformation properties of the soil,so it will be helpful to improve the current design and calculation of laterally loaded pile.