Experimental research and analysis of cast-in-place piles with expanded-base and post-grouting

GUO Quan-quan; LI Zhu

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Experimental research and analysis of cast-in-place piles with expanded-base and post-grouting

更新时间：2026-06-25

- Experimental research and analysis of cast-in-place piles with expanded-base and post-grouting
- Vol. 24, Issue 5, (2003)
- 作者机构：
  
  太原理工大学建筑与环境工程学院,山西,太原,030024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：19 August 2014，
  
  Published：2003
- 稿件说明：
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GUO Quan-quan, LI Zhu. Experimental research and analysis of cast-in-place piles with expanded-base and post-grouting[J]. 2003, 24(5).
DOI：

GUO Quan-quan, LI Zhu. Experimental research and analysis of cast-in-place piles with expanded-base and post-grouting[J]. 2003, 24(5). DOI：

摘要

结合某工程的桩基现场静载荷试验和桩身应力测试，对比分析了同一场地中相同桩长的普通钻孔灌注直桩、后注浆灌注直桩、扩底灌注桩和扩底后注浆灌注桩4种桩型的承载力特性、桩身轴力和桩侧摩阻力的分布特性，阐述了扩底后注浆桩的桩身轴力传递规律和侧阻力发挥性状。研究表明：扩底后注浆桩有沉降小、单桩承载力高的特点，具有良好工程性状和经济效益。

Abstract

Static vertical loading tests and stress tests of four types of piles

that is

the normal cast-in-place pile

the cast-in-place pile with post-grouting

the cast-in-place pile with expanded-base

the cast-in-place pile with expanded-base and post-grouting

are performed in the same site. Based on the field experiments

compares the bearing capacity behavior

the distribution of axial force and lateral friction of the four types of piles. And transmission rule of axial force and the action of lateral friction of the piles is analyzed. The results of researches prove that the cast-in-place piles with expanded-base and post-grouting possess the characteristics of low settlement and high bearing capacity.

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