Field testing analysis of grouting impact range of grouting gravel pile

ZUO Wei-long; LIU Han-long; CHEN Yong-hui

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Field testing analysis of grouting impact range of grouting gravel pile

更新时间：2026-06-25

- Field testing analysis of grouting impact range of grouting gravel pile
- Vol. 29, Issue 12, (2008)
- 作者机构：
  
  1. 河南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： TU472
- Online First：11 August 2013，
  
  Published：2008
- 稿件说明：
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ZUO Wei-long, LIU Han-long, CHEN Yong-hui. Field testing analysis of grouting impact range of grouting gravel pile[J]. 2008, 29(12).
DOI：

ZUO Wei-long, LIU Han-long, CHEN Yong-hui. Field testing analysis of grouting impact range of grouting gravel pile[J]. 2008, 29(12). DOI：

摘要

浆固碎石桩作为一种新型桩基技术，不仅具有一般刚性桩的桩体置换作用，而且能改善桩周土的力学性质，从而可有效地提高复合地基的承载力及减小沉降变形。通过现场进行成桩前后的桩周土性质研究，验证了注浆对桩周土性质的改善作用，得出成桩时注浆影响范围及分布规律。针对黏性土中浆固碎石桩浆液挤密作用，按平面轴对称问题分析了塑性区边界条件及内部单元体的平衡条件，提出浆固碎石桩浆液影响范围的计算公式。理论公式计算结果与原位测试结果较为符合，从而验证了计算方法的合理性，这对浆固碎石桩的注浆加固具有一定的指导意义。

Abstract

Grouting gravel pile is a new technique of pile. It has the usual effectiveness of rigid pile composite foundation

furthermore

mechanical properties of soil around pile

which can increase bearing capacity of composite foundation and reduce its settlement. The property of soil around pile is tested in field before and after the pile is constructed

from which the grouting impact range and regularities of distribution are obtained. In allusion to clay soil around pile

the calculation formula of range impacted by grouting is obtained out by analysing balanced equation of cell cube in plastic zone. The calculation result is consistent with the grouting impact range obtained from in-situ test

so as to prove the rationality of calculation method.

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