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Analyzes and Studies on the Characteristic of Pile Foundation Based on Soil-pile Interaction

Author: LiuFeng
Tutor: ShiJian
School: Chang'an University
Course: Structural Engineering
Keywords: pile foundation interaction elastic-plasticity theory Finite-element method subsidence
CLC: TU473.1
Type: Master's thesis
Year: 2008
Downloads: 198
Quote: 2
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Abstract


The pile foundation is one kind of foundation type which is applied widespread, and is also one of most ancient underlying forms. The pile foundation is widely used to each kind of project because it has many merits. For example, it has highly bearing capacity, good stability and strong withdrawal resistance. To be able to resist the complex load and good compatibility to every geology conditions as well as its special performance. The conventional design of pile foundation is only considered the load-bearing of pile, did not consider the share responsibility for soil, such design no doubt is safe, but is in favor of conservative. The research of soil- pile interaction theory is to disclosure some characters when the pile and the soil undertake the load together, and some factors of interaction. However, there does not have a set of perfect design theory and calculation method at present, so we must do the further studies on the soil- pile interaction that satisfies the needs of the actual project.This article adopts D-P material model and uses the software of ANSYS to analysis the influencing factors for the question of the soil- pile interaction, all of the research based on the elastic-plasticity theory of the earth, the basic principle of nonlinear element and the fundamentals of soil- pile interaction. The mainly contents of research are as follows:1. Discussed the reasonable computation model of soil- pile interaction;2. The paper considered the problem of contact surface between the pile and soil, established single column and multi-column models, discussed the serviceability of the model. Completed the analysis of the soil- pile mode by ANSYS9.0;3. Analyzed the characteristic of soil- pile interaction according to the result of finite element computed;4. According to the results, analyzed the influencing factor of soil- pile interaction for the subsidence of pile foundation, the displacement, the stress of soil- pile and the ratio of the stress shares;5. Compared with the example of actual project to appraisal the rationality and reliability of calculation method.

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > Pile foundation and deep foundation > Pile
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