Assessment of effect of ground improvement for hydraulic structure using combined vacuum and surcharge preloading

WU Yue-dong; YIN Zong-ze; GUO Ji-zhong

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Assessment of effect of ground improvement for hydraulic structure using combined vacuum and surcharge preloading

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- Assessment of effect of ground improvement for hydraulic structure using combined vacuum and surcharge preloading
- Vol. 28, Issue 4, (2007)
- 作者机构：
  
  1. 河海大学岩土工程研究所,江苏,南京,210098
  2. 江苏省电力设计院,江苏,南京,210024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU472.3+3
- Online First：05 September 2013，
  
  Published：2007
- 稿件说明：
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WU Yue-dong, YIN Zong-ze, GUO Ji-zhong. Assessment of effect of ground improvement for hydraulic structure using combined vacuum and surcharge preloading[J]. 2007, 28(4).
DOI：

WU Yue-dong, YIN Zong-ze, GUO Ji-zhong. Assessment of effect of ground improvement for hydraulic structure using combined vacuum and surcharge preloading[J]. 2007, 28(4). DOI：

摘要

介绍了真空联合堆载预压法加固软土地基的特点，探讨了该方法的加固机理，论证了淮河入海水道张马涵闸软基处理采用真空联合堆载预压法的依据。根据现场的监测资料(包括表面沉降、分层沉降、水平位移、孔隙水压力、真空度等)和原位测试(包括CPT、十字板试验、静载试验和标准贯入试验等)资料，以及土工试验成果的分析和比较，对张马涵闸软基的加固效果进行分析和检验，结果证明，该法完全满足设计要求，为该工法在类似工程软基处理的推广应用提供参考。

Abstract

The special feature including the mechanism of combined vacuum and surcharge preloading method for soft ground improvement is described. The soft ground improvement work in Huaihe River Zhangma Watergate project is investigated. Based on the field monitoring data (including surface settlement

settlement at different strata

horizontal displacement

pore-water pressure and degree of vacuum)

in-situ tests(including CPT

STP

vane shear tests and static load tests) and laboratory tests

the effect of ground improvement is analyzed and assessed. The results satisfy the design requirements. The study provides a reference for similar ground improvement projects using the proposed method.

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