STUDY OF RHEOLOGICAL PROPERTIES OF THE LACUSTRINE SOFT SOIL UNDER DIFFERENT STRESS LEVEL

Deng Zongwei; Zhu Zhixiang; Zeng Xiangjun; Kong Gangqiang

doi:10.13204/j.gyjz201406016

Volume 44 Issue 06

Jan. 2015

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2014 > 44(06): 67-72

Cao Yunzhong, Gan Gang, Tang Jinchum. COMPARATIVE STUDY ON THE STRUCTURAL PERFORMANCE BETWEEN PRESTRESSED CONCRETE FRAMES WITH CROSS COLUMN AND RECTANGULAR COLUMN[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(4): 40-42,56. doi: 10.13204/j.gyjz200404012

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Deng Zongwei, Zhu Zhixiang, Zeng Xiangjun, Kong Gangqiang. STUDY OF RHEOLOGICAL PROPERTIES OF THE LACUSTRINE SOFT SOIL UNDER DIFFERENT STRESS LEVEL[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(06): 67-72. doi: 10.13204/j.gyjz201406016

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STUDY OF RHEOLOGICAL PROPERTIES OF THE LACUSTRINE SOFT SOIL UNDER DIFFERENT STRESS LEVEL

doi: 10.13204/j.gyjz201406016

Publish Date: 2014-06-20

Abstract

Abstract

In order to understand the rheological properties of lacustrine soft soil at different stress levels，a onedimensional indoor consolidation creep test was carried out on soft soil in the Dongting Lake area． A rheological constitutive model under lateral confinement conditions was then constructed，and the analytical solution was obtained under one-dimensional consolidation conditions according to the fitted rheological constitutive model． The results indicate that soft soil in the Dongting Lake area has obvious nonlinear creep characteristics． When the stress level is lower than a certain stress threshold，the rheological properties of soft soil follow the rules of the Schiffman model， and the consolidation rate of the soil is low． When the stress level is higher than a certain stress threshold，the rheological properties of soft soil follow the rules of the Nishihara model，and the consolidation rate of the soil is high． In addition，the consolidation rate increases with the increase of the stress threshold． Therefore，in the engineering construction phase of a lacustrine soft soil area，different settlement formulas and engineering treatment measures should be adopted according to the engineering properties of the soft soil and the applied load．
- lacustrine soft soil,
- stress level,
- rheological properties,
- analytical solution

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沈阳化工大学材料科学与工程学院沈阳 110142

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