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Article

A Coupled Macroscopic and Mesoscopic Creep Model of Soft Marine Soil Using a Directional Probability Entropy Approach

1
Guangdong Engineering Research Centre for Major Infrastructure Safety, School of Civil Engineering, Sun Yat-Sen University, Guangzhou 510275, China
2
Department of Infrastructure Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Riccardo Briganti
J. Mar. Sci. Eng. 2021, 9(2), 224; https://doi.org/10.3390/jmse9020224
Received: 22 January 2021 / Revised: 14 February 2021 / Accepted: 16 February 2021 / Published: 19 February 2021
(This article belongs to the Section Coastal Engineering)
To mitigate the risk of structural failure in coastal engineering caused by soft marine soil creep, this study presents a coupled macroscopic and mesoscopic creep model of soft marine soil to predict long-term deformation behavior of the soil. First, the mesoscopic characteristics of soft marine soil (e.g., pore, particle, and morphological characteristics) under different external pressures were obtained using a scanning electron microscope. Then, both the mesoscopic and macroscopic characteristics of soil were quantified using directional probability entropy and then used as inputs to develop the model. The model predictions agree with the experimental data. In addition, the experimental results indicate linear negative correlations between porosity and pore ratio with stress—the relationships between the fractal dimension of pore distribution and probability entropy of particle orientation under stress are generally nonlinear. Further, results of sensitivity analysis indicate that the probability entropy of particle orientation is one of the most critical parameters governing long-term creep deformation behavior of soft marine soil. View Full-Text
Keywords: creep; soft marine soil; macroscopic; mesoscopic; directional probability entropy creep; soft marine soil; macroscopic; mesoscopic; directional probability entropy
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MDPI and ACS Style

Zhou, C.; Cui, G.; Liang, W.; Liu, Z.; Zhang, L. A Coupled Macroscopic and Mesoscopic Creep Model of Soft Marine Soil Using a Directional Probability Entropy Approach. J. Mar. Sci. Eng. 2021, 9, 224. https://doi.org/10.3390/jmse9020224

AMA Style

Zhou C, Cui G, Liang W, Liu Z, Zhang L. A Coupled Macroscopic and Mesoscopic Creep Model of Soft Marine Soil Using a Directional Probability Entropy Approach. Journal of Marine Science and Engineering. 2021; 9(2):224. https://doi.org/10.3390/jmse9020224

Chicago/Turabian Style

Zhou, Cuiying; Cui, Guangjun; Liang, Wanyi; Liu, Zhen; Zhang, Lihai. 2021. "A Coupled Macroscopic and Mesoscopic Creep Model of Soft Marine Soil Using a Directional Probability Entropy Approach" J. Mar. Sci. Eng. 9, no. 2: 224. https://doi.org/10.3390/jmse9020224

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