Analytical Solution for Radial Consolidation of Combined Electroosmotic, Vacuum, and Surcharge Preloading Considering Smear Effects
Publication: International Journal of Geomechanics
Volume 24, Issue 7
Abstract
The combining of electroosmotic, vacuum, and surcharge preloading is an emerging technique for soft foundation treatment. Considering smear effects and free strain, an analytical solution for the radial consolidation of combined electroosmotic, vacuum, and surcharge preloading was derived based on the characteristic function method and Bessel function. The correctness of the proposed solution was verified by comparing with existing solutions and numerical results. On this basis, the influence of smear effects, vacuum pressure, surcharge load, and applied voltage on the consolidation characteristics of soil was further analyzed. The results showed that when the electroosmosis permeability coefficient of the undisturbed zone was greater than that of the smear zone, the excess pore-water pressure at the interface between the smear zone and the undisturbed zone increased in the early stage of consolidation owing to the electroosmotic effect. Vacuum pressure had a great influence on soil consolidation in the smear zone, while applied voltage had a great influence on the consolidation of soil in the undisturbed zone.
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Data Availability Statement
All data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research is supported by the National Natural Science Foundation of China (Grant Nos. 52178371, 52178321, 52108322, and 51878634) and the Outstanding Youth Project of the Natural Science Foundation of Zhejiang Province (LR21E080005). The China Postdoctoral Science Foundation Funded Project (Grant No. 2022M712964), the China Scholarship Council (CSC) (Grant No. 201906660001), and the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 23KJB560004) are also acknowledged.
Author contributions: Mengfan Zong: Conceptualization, Writing—Original draft, Formal analysis. Lichen Li: Formal analysis, Data Curation, Writing—Review and Editing. Wenbing Wu: Project administration, Funding acquisition, Conceptualization, Writing—Review and Editing. Yi Zhang: Formal analysis, Data Curation. Guoxiong Mei: Conceptualization, Writing—Review and Editing.
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Published In
International Journal of Geomechanics
Volume 24 • Issue 7 • July 2024
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© 2024 American Society of Civil Engineers.
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Received: May 9, 2023
Accepted: Jan 31, 2024
Published online: May 9, 2024
Published in print: Jul 1, 2024
Discussion open until: Oct 9, 2024
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