Probabilistic Optimal Design of Rubble-Mound Breakwater
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 141, Issue 4
Abstract
The present paper focuses on a methodology for the optimal design of a rubble-mound breakwater using a probabilistic analysis. In this (optimization) problem formulation, the total construction cost is minimized, subject to the constraints related to geometry, safety margins in different failure modes (overtopping armor instability failure, toe erosion, and settlement failure), and acceptable yearly failure rate (a value indicating chance of failure). The aforementioned method is illustrated by its application to the design of a multilayer rubble-mound breakwater that is under construction at Thalai Fishing Harbour, Thalassery, Kerala, India. Then the derived optimal design is compared with the results of conventional design. The comparative study reveals that the proposed probabilistic design resulted in a better economical design.
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Acknowledgments
The authors acknowledge the Kerala State Harbour Engineering Department for providing the report “Techno Economic Feasibility Report, Thalai Fishing Harbour.” The authors would also like to acknowledge Dr. Suseela, ex-faculty, Sree Krishna College Guruvayoor, Thrissur, Kerala, India, for her suggestions on writing style, and the Department of Physical Oceanography, Cochin University of Science and Technology, Kochi, India for allowing Ms. Hoby to carry out the project of the post graduate programme at Government Engineering College Trichur, Thrissur, Kerala, India.
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Information & Authors
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 141 • Issue 4 • July 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jun 1, 2013
Accepted: Dec 2, 2014
Published online: May 6, 2015
Published in print: Jul 1, 2015
Discussion open until: Oct 6, 2015
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