Affiliation(s):
Key Laboratory of Offshore Geotechnics and Material of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
moreAffiliation(s): Key Laboratory of Offshore Geotechnics and Material of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; Hainan Institute, Zhejiang University, Sanya, 572000, China; Ninghai Highway and Transportation Management Center, Ningbo 315600, China; Ninghai Traffic Engineering Construction Management Institute, Ningbo 315600, China;
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Yuansheng YU, Lingling LI, Xiangmiao KONG, Chengyuan LI, Zhen GUO. Deformation and stability of the seawall, considering the strength uncertainty of cement mixing piles[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300180
@article{title="Deformation and stability of the seawall, considering the strength uncertainty of cement mixing piles", author="Yuansheng YU, Lingling LI, Xiangmiao KONG, Chengyuan LI, Zhen GUO", journal="Journal of Zhejiang University Science A", year="in press", publisher="Zhejiang University Press & Springer", doi="https://doi.org/10.1631/jzus.A2300180" }
%0 Journal Article %T Deformation and stability of the seawall, considering the strength uncertainty of cement mixing piles %A Yuansheng YU %A Lingling LI %A Xiangmiao KONG %A Chengyuan LI %A Zhen GUO %J Journal of Zhejiang University SCIENCE A %P %@ 1673-565X %D in press %I Zhejiang University Press & Springer doi="https://doi.org/10.1631/jzus.A2300180"
TY - JOUR T1 - Deformation and stability of the seawall, considering the strength uncertainty of cement mixing piles A1 - Yuansheng YU A1 - Lingling LI A1 - Xiangmiao KONG A1 - Chengyuan LI A1 - Zhen GUO J0 - Journal of Zhejiang University Science A SP - EP - %@ 1673-565X Y1 - in press PB - Zhejiang University Press & Springer ER - doi="https://doi.org/10.1631/jzus.A2300180"
Abstract: The cement mixing (CM) pile is a common method of improving soft offshore ground. The strength growth of CM piles under complex conditions is affected by many factors, especially the cement and moisture content, and shows significant uncertainty. To investigate the stochasticity of the early strength of CM piles and its impact on the displacement and stability of a seawall, a series of laboratory tests and numerical analyses were carried out in this study. Vane shear tests were conducted on the cement-solidified soil to determine the relationships between the undrained shear strength su of the cement soil curing in the seawater and the cement content ac, as well as the in-situ soil-moisture content w. It can be inferred that the 24h undrained shear strength follows a normal distribution. A numerical model considering the random CM pile strength was established to investigate the deformation of the seawall. Due to the uncertainty of CM pile strength, the displacement of the seawall demonstrates a certain discreteness. The decrease of the mean undrained shear strength of CM piles causes a corresponding increase in the average displacement of the seawall. When the mean strength of CM piles is lower than a certain threshold, there is a risk of instability. Furthermore, the heterogeneity of the strength within an individual CM pile also has an impact on seawall displacement. Attention should be paid to the uncertainty of CM pile strength to control displacement and stability.
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