Numerical modeling of ice–seabed interaction in layered soil: stiff over soft clay
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Published:2023-12-01
Issue:12
Volume:60
Page:1968-1983
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ISSN:0008-3674
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Container-title:Canadian Geotechnical Journal
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language:en
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Short-container-title:Can. Geotech. J.
Author:
Hashemi Seyedhossein1,
Shiri Hodjat1ORCID
Affiliation:
1. Civil Engineering Department, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, A1B 3X5, St. John’s, NL, Canada
Abstract
This study presents a numerical investigation of free field ice gouging in layered cohesive seabeds comprising stiff over soft clay. A three-dimensional, half-space, dynamic large deformation finite element analysis was conducted using the Coupled Eulerian Lagrangian approach. To simulate the seabed, a Tresca soil model with the strain rate and strain-softening effects was coded into a user subroutine. The accuracy of the model was verified by comparing its results with those of published experimental studies. Additionally, a comprehensive parametric study was conducted to examine the effect of various ice gouging scenarios and seabed soil parameters on the subgouge soil deformation and the ice keel reaction forces. Our findings revealed that an interactive response occurs between the soil layers and the ice keel that may cause the peak subgouge soil deformation and keel reaction magnitudes to differ from those observed under uniform soil condition. The developed model was found to be an efficient tool for free field ice gouging analysis in cohesive layered seabeds.
Funder
Natural Sciences and Engineering Research Council of Canada
Memorial University of Newfoundland
Research and Development Corporation of Newfoundland and Labrador
Wood PLC
Publisher
Canadian Science Publishing
Subject
Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology
Reference22 articles.
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2. C-CORE. 1995. Pressure Ridge Ice Scour Experiment, PRISE: Phase 3-Centrifuge Modelling of Ice Keel Scour: Draft Final Report. April 1995. Publication 95-C12. p. 52.
3. The Effect of Penetration Rate on the Strength of Remolded Clay and Sand Samples