The Influence of Organic Matter Content on the Rheological Model Parameters of Soft Clay


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Аннотация

Soil samples with different organic matter contents and their geotechnical index properties were determined. With an improved direct shear creep apparatus, the rheological characteristics of the soil samples were tested under stepwise loading, and the strain-time curves (creep curves) under different loads were obtained. Based on the Nishihara model, a new nonlinear viscoelasto-plastic soil rheological model (improved Nishihara model) was proposed by introducing a nonlinear Hooke element, which is capable of reflecting the rheological properties of artificial soft clay and natural soft clay. The results of the fitting indicate that the organic matter content is an important factor in the creep behavior of soft clay, and there is a good correlation between the organic matter content and the rheological model parameters.

Авторлар туралы

Zhen-feng Ou

Civil and Transportation Institute, South China University of Technology

Email: smfe@mail.ru
ҚХР, Guangzhou

Ying-guang Fang

Civil and Transportation Institute, South China University of Technology; State Key Laboratory of Subtropical Building Science

Email: smfe@mail.ru
ҚХР, Guangzhou; Guangzhou

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