Bearing Performance of Finned Suction Caissons under Combined VHMT Loading in Clay
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 150, Issue 5
Abstract
This paper reports numerical investigations on the bearing performance of a novel finned suction caisson foundation under combined vertical, horizontal, moment, and torsional loading in clay. From comprehensive comparison analyses between finned and nonfinned suction foundations, improvements in uniaxial and combined loading capacities due to the assembled fins are examined and interpreted by insights into the failure mechanisms. Effects of non-coplanar torsional loading on the combined loading capacity surfaces are investigated and evaluated with the aid of the failure envelope method. A set of closed-form expressions accommodated to three different loading scenarios (zero-, low- and high-torsion conditions) are proposed based on a detailed design chart to estimate the bearing performance under combined vertical (), horizontal (), moment (), and torsional () loading (denoted as VHMT loading) in clay. The critical considerations in design including effects of loading direction and foundation–soil interface are also discussed.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors would like to acknowledge the support received from the National Natural Science Foundation of China (No. 42177122; No. 52271290), and the Young Experts of Taishan Scholars (No. tsqn202211071). The third author would like to acknowledge the support from the DNV internal research funding. The corresponding author acknowledges the support from the NGI research funding.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 150 • Issue 5 • May 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Nov 21, 2022
Accepted: Dec 11, 2023
Published online: Feb 29, 2024
Published in print: May 1, 2024
Discussion open until: Jul 29, 2024
ASCE Technical Topics:
- Analysis (by type)
- Caissons
- Clays
- Continuum mechanics
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Failure analysis
- Failure loads
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Foundation design
- Foundations
- Geomechanics
- Geotechnical engineering
- Horizontal loads
- Hydrologic engineering
- Load bearing capacity
- Soil mechanics
- Soils (by type)
- Solid mechanics
- Static loads
- Statics (mechanics)
- Structural dynamics
- Suction
- Vertical loads
- Water and water resources
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