Thermal-mechanical sequence coupling analysis on the ultimate bearing capacity of embedded foundations in polar marine permafrost

This study presents the results of the numerical simulation analysis, aiming to investigate the temperature effects on the vertical ultimate bearing capacity of the three types of foundations, namely generic spudcan (SGEN), skirted and pile foundations, at different embedded depth ratios H/D (H/D = 1/3, 2/3, and 1 or H/D = 10/3, 5, and 20/3) and strength reduction coefficients su,T/su0 (su,T/su0 = 0.1, 0.5). The latent heat effects on foundation bearing capacities are studied by small strain finite element analysis (FEA). The findings from this investigation and previous research indicate that the foundations' vertical ultimate bearing capacity decreases with time, while it increases with increasing the foundation's embedment ratio. For the foundations, the strength reduction coefficient plays an important role in the vertical ultimate bearing capacity. Notably, as the strength reduction coefficient decreases from 0.5 to 0.1, the reduction rate of the vertical ultimate bearing capacity increases by ∼ 3 to 6 times accordingly. Consequently, a normalized bearing capacity coefficient model has been proposed to provide an optimization tool for engineering design in permafrost regions.

• Record URL:
  • https://doi.org/10.1016/j.apor.2024.104256
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0141118724003778
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01411187
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Hu, Xiaofei
  • Yu, Long
  • Yang, Qing
  • Han, Xiao
• Publication Date: 2024-12

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 104256
• Serial:
  • Applied Ocean Research
  • Volume: 153
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0141-1187
  • Serial URL: https://www.sciencedirect.com/journal/applied-ocean-research

Subject/Index Terms

• TRT Terms: Bearing capacity; Mechanical analysis; Offshore drilling platforms; Permafrost; Polar regions; Temperature; Underwater foundations
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 01934660
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 22 2024 9:07AM