用分层积分法分析桩的荷载传递

Load Transfer Analysis of Piles by Layered Integration Method

本文讨论用分层积分法计算桩的位移、轴向压力、桩侧摩阻力、桩端阻力和其它静力受荷性能。推导出了一个运用简单积分的具体计算方法,使得较多复杂因素,象土的非线性、分层土中各层土的不同特性,土参数随深度的变化、桩砼弹性模量在不同荷载下的变化,甚至不等截面桩,都能方便地考虑和计算,为桩的正确计算提供了理论基础。文中给出了6根桩的静载试验实测结果,并同分层积分法计算值进行了比较,两者结果基本一致。

In this paper, the computation of displacement, axial compression, skin friction, point resistance and other static load bearing behavior of piles by layered integration method will be discussed. Through the establishment of a new computational method with simple integrations, many complex factors such as nonlinear property of soil,different soil characteristics in each layer of the layered soil, variation of parameters with changes of depth,different elastic moduli of piles under different loads, and even pile with non-uniform corss-sections, can all be conveniently taken into consideration in the computation. Thus, it provides a theoretical base for computing piles correctly. Observation of static load tests from 6 piles are given, and the computed values by the layered integration method are found to agree with practical measured results.