Journal of Marine Science and Technology

Journal of Marine Science and Technology

Sesitivity of Collapse Wave Height with Incremental Wave Analysis

Document Type : Original Manuscript

Authors
Reza Movahedinia
Mirabdolhamid Mehrdad
Saeed pourzeynali
Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran.
10.22113/jmst.2016.32742
Abstract
Jacket-type offshore platforms play an important role in oil and gas industries in shallow and intermediate water depths such as Persian Gulf region. Such important structures need accurate considerations in analysis, design and assessment procedures. Incremental wave analysis for performance-based assessment of jacket platforms is established in 2011 to estimate different limit states and accurate behavior of jacket platform against environmental wave loading. IWA can be appropriate substitute to current pushover practice. The IWA can estimate the collapse-prevention limit state of jacket platforms properly. In addition, an appropriate parameter for ultimate capacity of offshore platforms is introduced which is called Collapse Wave Height (CWH). The CWH can be utilized as a substitute to RSR parameter in the design and assessment of jacket platforms. In this paper, IWA is explained. IWA curves, collapse-prevention limit state and CWH for case study platform is calculated. Effect of deck mass and its distribution on CWH is examined.
Keywords
Fixed Jacket Platform
Seastate
Incremental Wave Analysis
Collapse Wave Height
Deck weight

Subjects

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Journal of Marine Science and Technology
Volume 14, Issue 4
Winter 2016
Pages 98-107

  • Receive Date 09 February 2015
  • Revise Date 20 April 2015
  • Accept Date 11 September 2016
  • Publish Date 20 February 2016