支挡结构计算分析

Computational Analysis of Flexible Retaining Structures

本文由工程实践中的“挡土桩”来论述支挡结构的计算。并对单支顶,多支顶,空间单梁支撑等支挡结构类型进行了分析,提供了计算简图与计算公式。并归纳给出荷载函数为三次以下多项式文克尔地基梁微分方程解中“内力变形修正项”的通式。其解算过程简明准确,合理实用,既方便手算也适合于电算。

This paper discusses the computation of flexible retaining structures in accordance with engineering practice of retaining piling. Based on the analysis of different types of retaining structures, such as piling with fixed end and single or multi-supports at the upper part or with fixed end and transvers single beam sustainer at the upper part etc. Calculation sketches and formulas are presented in the paper. Besides,some general expressions are summarized that can be used for solving modified terms of internal forces and deflections in Winkler's beam differential equation in case the load function is smoother than cubic polynomial. The computation is practical and accurate and can be worked out either by hand or by computer.