Ice-Resistant Performance Analysis of Jackup Structures
Publication: Journal of Cold Regions Engineering
Volume 32, Issue 1
Abstract
Jackup structures that have cylindrical legs with gear teeth are widely used in shallow waters. Currently, there is a growing demand for the design of ice-resistant jackup platforms in ice-prone cold regions. Due to the limitations of ice load research, the design code for ice-resistant jackup structures is not based on dynamic response analysis that considers a dynamic ice force model. To develop a reasonable ice-resistant concept design and conduct a safety assessment, dynamic response analysis of jackup platforms under ice loads is essential. In this research, based on a model test of ice forces on a jackup platform, the interaction between ice and a cylindrical leg with gear teeth was observed. Then, the failure modes of compliant structures under the ice forces were presented. Finally, ice-induced dynamic responses were computed under typical ice conditions, and ice resistance performance was analyzed using a jackup platform in the Bohai Sea as an example. This study provides a reasonable basis for the ice-resistant conceptual design of jackup platforms in cold regions.
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Acknowledgments
The support of the National Natural Science Foundation of China (51679033 and 51309046), State’s Key Project of Research and Development Plan (2016YFC0303400), and the Special Items of National Marine Public Welfare Industry (201505019) are much appreciated.
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Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 32 • Issue 1 • March 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jul 19, 2016
Accepted: Jun 8, 2017
Published online: Oct 31, 2017
Published in print: Mar 1, 2018
Discussion open until: Mar 31, 2018
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