Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches

ZHANG Yi-ping; YU Ya-nan; ZHOU Hong-wei

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Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches

更新时间：2026-06-25

- Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches
- Vol. 27, Issue 7期　刊出日, (2006)
- 作者机构：
  
  1. 浙江大学建筑工程学院,杭州,310027
  2. 宁波市城市投资股份有限公司,宁波,315000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU472.3
- Online First：19 November 2013，
  
  Published：2006
- 稿件说明：
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ZHANG Yi-ping, YU Ya-nan, ZHOU Hong-wei. Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches[J]. 2006, 27(7期　刊出日).
DOI：

ZHANG Yi-ping, YU Ya-nan, ZHOU Hong-wei. Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches[J]. 2006, 27(7期　刊出日). DOI：

摘要

为了研究引起搅拌桩复合地基工后沉降的原因，针对粉喷桩加固桥头软基沉降进行Biot固结有限元正反分析。有限元分析时的土体本构模型采用Duncan-Chang非线性弹性模型，反分析时的土体本构模型分别采用Duncan-Chang非线性弹性模型和Merchant黏弹性模型。计算分析表明，引起粉喷桩加固地基工后沉降的主要因素：早期时是交通荷载引，而后期土体蠕变的影响则占主导地位。

Abstract

In order to study the causes of post-construction settlement of deep-jet-mixed(DJM) pile composite foundation at bridge approaches

the settlement is analyzed and back-analyzed by Biot’s consolidation FEM. The soil constitutive model is the Duncan-Chang nonlinear elastic model in finite element analysis; and Duncan-Chang nonlinear elastic model and Merchant viscoelastic model are used in finite element back-analysis. The computation results show that the traffic load and soil creep are the main causes induced the post-construction settlement of DJM pile composite foundation. The traffic load is the main cause at early period

but soil creep is the main cause at post period.

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ZHANG Yi-ping1

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