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

ZHANG Yi-ping1; YU Ya-nan1; ZHOU Hong-wei2

doi:10.16285/j.rsm.2006.07.031

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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
- Issue 7, Pages: 1171-1175(2006)
- 作者机构：
  
  1. 浙江大学建筑工程学院
  2. 宁波市城市投资股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2006.07.031
  CLC： TU433
- Published：2006
- 稿件说明：
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[1]张仪萍,俞亚南,周宏伟.桥头粉喷桩复合地基工后沉降原因分析[J].岩土力学,2006(07):1171-1175.

ZHANG Yi-ping1, YU Ya-nan1, ZHOU Hong-wei2. Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches[J]. 2006, (7): 1171-1175.
[1]张仪萍,俞亚南,周宏伟.桥头粉喷桩复合地基工后沉降原因分析[J].岩土力学,2006(07):1171-1175. DOI： 10.16285/j.rsm.2006.07.031.

ZHANG Yi-ping1, YU Ya-nan1, ZHOU Hong-wei2. Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches[J]. 2006, (7): 1171-1175. DOI： 10.16285/j.rsm.2006.07.031.

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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