Analysis of factors influencing stress ratio between pile and soil of composite foundation with cast-in-situ concrete thin-wall pipes

LIU Han-long; ZHANG Bo

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Analysis of factors influencing stress ratio between pile and soil of composite foundation with cast-in-situ concrete thin-wall pipes

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- Analysis of factors influencing stress ratio between pile and soil of composite foundation with cast-in-situ concrete thin-wall pipes
- Vol. 29, Issue 8, (2008)
- 作者机构：
  
  1. 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098
  2. 河海大学岩土工程科学研究所,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：02 August 2013，
  
  Published：2008
- 稿件说明：
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LIU Han-long, ZHANG Bo. Analysis of factors influencing stress ratio between pile and soil of composite foundation with cast-in-situ concrete thin-wall pipes[J]. 2008, 29(8).
DOI：

LIU Han-long, ZHANG Bo. Analysis of factors influencing stress ratio between pile and soil of composite foundation with cast-in-situ concrete thin-wall pipes[J]. 2008, 29(8). DOI：

摘要

桩土应力比是复合地基设计计算中一个重要参数。基于盐―通高速公路单桩复合地基静载试验，通过有限元模拟，研究了褥垫层模量和厚度、桩体模量、桩长、基础刚度等影响因素对现浇混凝土薄壁管桩复合地基桩土应力比的影响。结果表明所建立的模型是合理的。褥垫层模量增大或厚度减小导致桩土应力比增大，桩体模量、桩长和基础刚度的增加可使桩土应力比增加。

Abstract

The stress ratio between pile and soil is a key parameter for the design and calculation of composite foundations. Based on single pile composite foundation static load tests of Yan-Tong Expressway

the influences of cushion modulus and thickness

pile modulus

pile length

base stiffness etc. on the stress ratio of pile-soil are analyzed by using the finite element analysis. The results show that the model built is reasonable. The stress ratio of pile-soil increases with the cushion modulus increase or thickness decrease

and with the increases of pile modulus

pile length

base stiffness.

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