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The Scientific World Journal
Volume 2014 (2014), Article ID 968738, 8 pages
http://dx.doi.org/10.1155/2014/968738
Research Article

Experimental Research on Creep Characteristics of Nansha Soft Soil

MOE Key Laboratory of Disaster Forecast and Control in Engineering, College of Science and Engineering, Jinan University, Guangzhou 510632, China

Received 21 October 2013; Accepted 19 December 2013; Published 9 January 2014

Academic Editors: A. Billi and S. Kazemian

Copyright © 2014 Qingzi Luo and Xiaoping Chen. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of tests were performed to investigate the creep characteristics of soil in interactive marine and terrestrial deposit of Pearl River Delta. The secondary consolidation test results show that the influence of consolidation pressure on coefficient of secondary consolidation is conditional, which is decided by the consolidation state. The ratio of coefficient of secondary consolidation and coefficient of compressibility is almost a constant, and the value is 0.03. In the shear-box test, the direct sheer creep failure of soil is mainly controlled by shear stress rather than the accumulation of shear strain. The triaxial creep features are closely associated with the drainage conditions, and consolidation can weaken the effect of creep. When the soft soil has triaxial creep damage, the strain rate will increase sharply.