Seminar - Honghua Zhang - Analysis of piled raft subjected to general loading

Wednesday, September 15, 1999, 3 - 4 pm
Civil Engineering Lecture Room 3

Abstract

In the analysis, the piled raft was separated into three parts: the raft, the piles and the soil. The finite element method based on thin plate theory was used to analyse the raft; the finite layer theory was then used for the analysis of the soil, while the piles were solved by using the simple beam theory. A program APPRAF (Analysis of Piles and Piled RAft Foundations) was developed which may theoretically cover the analysis of single piles, pile groups, unpiled rafts and piled rafts on or off the ground. The comparisons of the present solutions with existing solutions, those calculated by well-known program FEAR6, GARP7 or FLAC3D, and published lab or full-scale test results show that the present method is a powerful and useful way to evaluate the elastic behaviour of the pile, raft and piled raft foundations embedded in or resting on different types of soils and subjected to general loading.