For temperate ice regions, guidance provided by current design codes regarding ice load estimation for thin ice is unclear, particularly for local pressure estimation. This is in part due to the broader issue of having different recommended approaches for estimating local, global, and dynamic ice loads during level ice interactions with a given structure based on region, scenario type, and a variety of other conditions. It is essential from a design perspective that these three scenarios each be evaluated using appropriate definitions for local design areas, global interaction area, and other structural details. However, the need for use of different modeling approaches for ice loads associated with each of these scenarios is not based on ice mechanics but rather has largely evolved as a result of complexities in developing physics-based models of ice failure in combination with the need to achieve safe designs in the face of limited full-scale data and the need for implementation in a probabilistic framework that can be used for risk-based design assessments. During a given interaction, the ice is the same regardless of the design task at hand. In this paper, a new approach is proposed based on a probabilistic framework for modeling loads from individual high-pressure zones acting on local and global areas. The analysis presented herein considers the case of thin, first-year sea ice interacting with a bottom-founded structure based on an empirical high-pressure zone model derived from field measurements. Initial results indicate that this approach is promising for modeling local and global pressures.
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October 2019
Research-Article
A Probabilistic High-Pressure Zone Model for Local and Global Loads During Ice-Structure Interactions
Rocky S. Taylor,
Rocky S. Taylor
Assistant Professor
Department of Mechanical Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rstaylor@mun.ca
Department of Mechanical Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rstaylor@mun.ca
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Martin Richard,
Martin Richard
National Research Council Canada (NRC),
1 Arctic Avenue,
St. John's, NL A1B 3T5, Canada;
Adjunct Professor
Department of Civil Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: martin.richard@nrc-cnrc.gc.ca
1 Arctic Avenue,
St. John's, NL A1B 3T5, Canada;
Adjunct Professor
Department of Civil Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: martin.richard@nrc-cnrc.gc.ca
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Ridwan Hossain
Ridwan Hossain
Department of Mechanical Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rbh546@mun.ca
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rbh546@mun.ca
Search for other works by this author on:
Rocky S. Taylor
Assistant Professor
Department of Mechanical Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rstaylor@mun.ca
Department of Mechanical Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rstaylor@mun.ca
Martin Richard
National Research Council Canada (NRC),
1 Arctic Avenue,
St. John's, NL A1B 3T5, Canada;
Adjunct Professor
Department of Civil Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: martin.richard@nrc-cnrc.gc.ca
1 Arctic Avenue,
St. John's, NL A1B 3T5, Canada;
Adjunct Professor
Department of Civil Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: martin.richard@nrc-cnrc.gc.ca
Ridwan Hossain
Department of Mechanical Engineering,
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rbh546@mun.ca
Memorial University of Newfoundland,
St. John's, NL A1C 5S7, Canada
e-mail: rbh546@mun.ca
1Corresponding author.
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received June 20, 2018; final manuscript received December 17, 2018; published online February 15, 2019. Assoc. Editor: Zhen Gao.
J. Offshore Mech. Arct. Eng. Oct 2019, 141(5): 051604 (10 pages)
Published Online: February 15, 2019
Article history
Received:
June 20, 2018
Revised:
December 17, 2018
Citation
Taylor, R. S., Richard, M., and Hossain, R. (February 15, 2019). "A Probabilistic High-Pressure Zone Model for Local and Global Loads During Ice-Structure Interactions." ASME. J. Offshore Mech. Arct. Eng. October 2019; 141(5): 051604. https://doi.org/10.1115/1.4042386
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