Determination of compaction model of loess surrounding the compaction pile in loess region

ZHI Bin; HAN Xiao-lei; QI Ming-jun

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Determination of compaction model of loess surrounding the compaction pile in loess region

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- Determination of compaction model of loess surrounding the compaction pile in loess region
- Vol. 27, Issue 7期　刊出日, (2006)
- 作者机构：
  
  1. 西安科技大学建筑与土木工程学院,西安,710054
  2. 西安建筑科技大学土木工程学院,西安,710055
  3. 陕西省建筑设计研究院,西安,710003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411.3
- Online First：19 November 2013，
  
  Published：2006
- 稿件说明：
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ZHI Bin, HAN Xiao-lei, QI Ming-jun. Determination of compaction model of loess surrounding the compaction pile in loess region[J]. 2006, 27(7期　刊出日).
DOI：

ZHI Bin, HAN Xiao-lei, QI Ming-jun. Determination of compaction model of loess surrounding the compaction pile in loess region[J]. 2006, 27(7期　刊出日). DOI：

摘要

研究分析了邓肯-张模型在挤密桩周土体应用中的不足。通过室内试验及对黄土地区挤土桩成孔对桩周土挤密原理的分析，认为桩周挤密黄土变形模量在破坏前符合邓肯-张模型，破坏后可用重塑土室内压缩试验的压缩模量与建议的转换系数? 确定，并进一步给出了相应的计算模式，提出了黄土成孔挤密模型并通过一个实例验证了模型的合理性。此模型为以后对桩周土体的应力分析打下了良好的基础，对进一步完善挤密桩设计理论具有参考价值。

Abstract

The deficiency of Duncan-Chang model in analyzing the stress of the loess surrounding the compaction pile is pointed out. Based on this analysis

the laboratory soil test is conducted and the compaction principle of the loess surrounding the pile in the loess region is analyzed; the above analysis leads to a conclusion that modulus of deformation accords with Duncan-Chang model before the loess surrounding the compaction pile failing and to be determined by modulus of compressibility of remolded sample compression test and suggested coefficient ? after failed. Then

a loess compaction model is suggested and verified through an example. The model sets a solid foundation for the future stress analysis of the loess surrounding the pile and has reference value to perfecting design theory of the compaction pile.

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Related Author

ZHI Bin1

HAN Xiao-lei2

QI Ming-jun3

HE Wen-hao

TIAN Wei

YUN Wei

LI Lu

ZHAO Hang-yu

Related Institution

School of Civil Engineering, Chang’an University

Institute of Geotechnical Engineering, Xi’an University of Technology

Shaanxi Provincial Key Laboratory of Loess Mechanics and Engineering

Regional Geological Survey Academe of Shaanxi Geology and Mining Group Co., Ltd.

School of Geological Engineering and Surveying, Chang’an University

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