土工基础

›› 2013, Vol. 27 ›› Issue (4): 83-85.

• 工程实录 • 上一篇    下一篇

袋装砂井对软土地基工后沉降及稳定性的影响

郭万里1,3 ，任利剑1，史洪森2，陈虹霖1   

  1. （1.河海大学土木与交通学院，南京 210098；2.河海大学水利水电学院，南京 210098;3.河海大学大禹学院，南京 210098）
  • 收稿日期:2012-11-15 出版日期:2013-08-20 发布日期:2013-08-27
  • 作者简介:郭万里（1990-），男，河海大学2012年岩土工程推免直博生，研究方向为地基处理、土体的本构关系等。

The Continued Effect of Sand-Wick Drains on Post-Construction Foundation Stability in Soft Soils

GUO Wanli1,3, REN Lijian1, SHI Hongsen2, CHEN Honglin1   

  1. (1.College of Civil Engineering and Transportation,Hohai University, Nanjing,210098;2．College of Water Conservancy and HydropowerEngineering, Hohai University, Nanjing,210098;3.Dayu College, Hohai University,Nanjing,210098)
  • Received:2012-11-15 Online:2013-08-20 Published:2013-08-27

摘要： 介绍了袋装砂井的主要设计参数及砂袋的工程性质，分析了各个设计参数对工后地基的影响，结果表明：袋装砂井对软土地基的加固作用集中在施工阶段，其在工后继续提高地基土的承载力及降低工后总沉降量的影响可以忽略不计，但在一定程度上可以持续提高工后地基稳定性，在长时间内不会对土体造成环境污染。

关键词: 袋装砂井, 软土地基, 工后, 地基稳定性

Abstract: This paper provides an introduction to main design parameters and engineering properties of the sandwick drains. It summarizes the effects the design parameters on postconstruction behavior of the foundation in soft clay.  The results indicate that the sandwick drains are most effective during construction.  They can continue to improve the subgrade stability of the postconstruction foundation to a certain extent, but the effect on improving the bearing capacity and reducing total settlement of postconstruction foundation is negligible. No environmental pollution from the sandwick drains were detected during longterm monitoring.

Key words: Sand-wick Drain, Soft Soils, Post-Construction, Subgrade Stability