Non-linear radial consolidation of sand-drained ground with varying volume compressibility and horizontal permeability

ZHOU Qi; LIU Han-long; CHEN Zhi-bo

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Non-linear radial consolidation of sand-drained ground with varying volume compressibility and horizontal permeability

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- Non-linear radial consolidation of sand-drained ground with varying volume compressibility and horizontal permeability
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  1. 河海大学岩土工程水利部重点实验室,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： TU470
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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ZHOU Qi, LIU Han-long, CHEN Zhi-bo. Non-linear radial consolidation of sand-drained ground with varying volume compressibility and horizontal permeability[J]. 2007, 28(S1).
DOI：

ZHOU Qi, LIU Han-long, CHEN Zhi-bo. Non-linear radial consolidation of sand-drained ground with varying volume compressibility and horizontal permeability[J]. 2007, 28(S1). DOI：

摘要

传统的砂井地基径向固结理论基于小应变理论，所以假设固结过程中体积压缩系数和水平渗透系数为常数。然而，固结过程中的和均随孔隙比的减小而呈非线性变化。在Hansbo理论基础上，引入普遍压缩方程和普遍渗透性变化方程来分别表示正常固结土的 - 和 - 的非线性变化关系，得到砂井地基非线性径向固结解，并与前者进行对比分析，探讨了非线性固结参数和加荷比对固结过程的影响。结果表明：和是控制砂井地基非线性径向固结过程的两个重要因素。

Abstract

The conventional radial consolidation theory is based on the small strain theory

so a constant volume compressibility and a constant coefficient of horizontal permeability are assumed during the consolidation process. However

both the non-linear variations of and are as a result of reduction in void ratio during the consolidation process. The non-linear relations of - and - for normally consolidated clays can be represented by the general compressibility equation and permeability change equation

respectively. Based on Hansbo’s theory

the solution of non-linear radial consolidation of sand-drained ground is deduced and compared with Hansbo’s solution. Finally

the influence of non-linear consolidation parameter and preloading increment ratio ( ) on the consolidation process is discussed. The results show that and are two important factors which control the non-linear radial consolidation of sand-drained ground.

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