路堤荷载下不排水桩复合地基固结特性的数值分析

杨涛; 李国维

doi:10.13204/j.gyjz200711016

路堤荷载下不排水桩复合地基固结特性的数值分析

doi: 10.13204/j.gyjz200711016

杨涛¹,
李国维²

1.
1. 上海理工大学土木工程系,上海 200093;
2.
2. 河海大学岩土工程研究所,南京 210098

基金项目:

上海市教委科技发展基金资助项目(05EZ02);广东省交通厅重点科技攻关资助项目(2005-02)

详细信息

作者简介:
杨涛,男,1962年出生,博士,教授

计量
- 文章访问数: 63
- HTML全文浏览量: 5
- PDF下载量: 46
- 被引次数: 0
出版历程
- 收稿日期: 2007-02-18
- 刊出日期: 2007-11-20

NUMERICAL ANALYSIS OF CONSOLIDATION BEHAVIOR OF COMPOSITE GROUNDWITH UNDRAINED PILES UNDER EMBANKMENT

Yang Tao¹,
Li Guo-wei²

1.
1. Department of Civil Engineering,University of Shanghai for Science and Technology Shanghai 200093;
2.
2. Geotechnical Engineering Institute,Hohai University Nanjing 210098

摘要

摘要: 采用有限元法对路堤荷载下不排水桩复合地基的固结进行数值模拟分析。通过对端承桩复合地基、悬桩复合地基及天然地基固结速率的比较,对不排水桩复合地基固结性状进行系统研究。研究表明,端承桩复合地基固结速率远大于天然地基,置换率和桩土模量比是影响其固结速率的主要因素;悬桩复合地基的固结性状与端承桩复合地基显著不同,相对加固深度是影响其固结速率的主要因素。
- 不排水桩 /
- 复合地基 /
- 固结 /
- 有限元
Abstract: Numerical simulation analysis of consolidation of composite ground with undrained piles under embankment is performed with finite element method.Consolidation characteristics of this kind of composite ground are studied systematically, through comparison of consolidation rates of natural ground, composite ground with floating piles and composite ground with penetrated piles.The numerical results indicate that consolidation rate of composite ground with penetrated piles is much faster than that of natural ground, replacement ratio and elastic modulus ratio between pile and soil are the most important factors affecting its consolidation rate.Consolidation characteristics of composite ground with floating piles differ greatly from that of composite ground with penetrated piles, ratio between pile length and thickness of soft soil layer has important effect on its consolidation rate.
- undrained pile /
- composite ground /
- consolidation /
- FEM