Author(s): Yang Aiwu, Wu Lei, Key Laboratory of Soft Soil Engineering Characteristic and Engineering Environment of Tianjin, Tianjin Chengjian University, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences State Key Laboratory of Geomechanics and Geotechnical Engineering
Pages: 919-925
Year: 2015 Issue:  4
Journal: Chinese Journal of Underground Space and Engineering
Keyword:  time-dependent; shear strength; consolidation; respective loading; structure characteristics;
Abstract: In order to analyze the strength characteristics and deformation characteristics of marine soft soil from the Tianjin region under different consolidation pressures,consolidation times and with different structures,the onedimensional consolidation test at different consolidation pressures and different consolidation times is carried out,then the miniature vane shear test of the undisturbed sample and reconstituted sample after consolidation is carried out. The results show that,in short time consolidation,the strength and deformation had obvious time-dependence characteristics and were influenced significantly by the structure of soft soil; while in long time consolidation,the strength and deformation of soil with consolidation pressure and consolidation time showed attenuated growth,and its influence by structure reduced over time. The long-term strength is related to initial stength,consolidation pressure and time. It increases with the initial strength and the cosolidation pressure,up to a peak then falls with time.