Test Research on the Long-Term Consolidation Mechanism of Ultra-Soft Clay

被引：0

作者：

Liu, Aimin ^{[1
,2
]}

Yan, Shuwang ^{[3
]}

Li, Jingshuang ^{[4
]}

机构：

[1] Tianjin Univ, Sch Civil Engn, CCCC Tianjin Port Engn Inst Ltd, Key Lab Port Geotech Engn,Minist Commun, Tianjin, Peoples R China

[2] Key Lab Geotech Engn Tianjin, Tianjin, Peoples R China

[3] Tianjin Univ, Sch Civil Engn, Tianjin, Peoples R China

[4] CCCC Tianjin Port Engn Inst Ltd, Tianjin, Peoples R China

来源：

CONSTRUCTION AND URBAN PLANNING, PTS 1-4 | 2013年 / 671-674卷

关键词：

Ultra-soft clay; Consolidation mechanism; Test; Shear strength;

D O I：

10.4028/www.scientific.net/AMR.671-674.146

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Although the settlement of ultra-soft clay improved by the vacuum preloading technique was large in land reclamation projects, usually exceeding the theoretical calculation value by a large amount, the strength increase was relatively small. As a result the foundation would not meet the design requirements for strength. So a test was conducted to investigate the effect and mechanism of long-term consolidation of ultra-soft clay in laboratory in a period of over 691 days. A preloading load of 80kPa was used in this drainage consolidation test. The test result showed that for the ultra-soft clay with a high initial water content but a small strength, the settlement is large with a large strength increase, but the shear strength was relatively low. These results should draw much attention in application of vacuum preloading technique in construction projects.

引用

页码：146 / +

页数：2