上部结构-筏-桩-地基共同作用分析的新方法

本文提出一种研究上部结构-筏-桩-地基共同作用分析的新方法,尤其是筏基分析方法新颖,比之有限元方法优越。计算结果与实测数据有较好的一致性。利用本文方法可求得上部结构和桩土结点的反力,筏基中任意点的弯矩、扭矩、正应力和剪应力。本文对共同作用机理进行分析,得出了可供工程设计人员参考的有益结论,例如,抽桩分析,可期获得可观的经济效益。

A New Method for Analyzing the Interaction between Superstructure, Raft, Pile and Soil

This paper presents a new method for analyzing the interaction between superstructure, raft, pile and soil. Particularly, the method for analyzing the raft foundation is original and superior to the finite element method. The result of the analysis is in good agreement with the field experimental data. By use of the method, the resistance force of the joint forces of the superstructure, pile and soil as well as the moment, torsion, axial and shear stresses at any point of the raft foundation can be calculated. Useful conclusions for engineering reference are obtained through the analysis of the interaction mechanism, such as the economic result of drawing off few piles in a design.