0
Polar and Arctic Engineering

Life-Cycle Cost-Effective Optimum Design of Ice-Resistant Offshore Platforms

[+] Author and Article Information
Gang Li1

State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian, 116023, Chinaligang@dlut.edu.cn

Dayong Zhang, Qianjin Yue

State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian, 116023, China

1

Corresponding author.

J. Offshore Mech. Arct. Eng 131(3), 031501 (May 29, 2009) (9 pages) doi:10.1115/1.3124138 History: Received April 02, 2007; Revised January 05, 2009; Published May 29, 2009

In China, the oil and natural gas resources in Bohai Bay are mainly marginal oil fields, which freeze in the winter. It is necessary to build both ice-resistant and economical offshore platforms. However, risk is involved in the design, construction, utilization, and maintenance of offshore platforms as uncertain events may occur within the life-cycle of a platform. In this paper, the optimum design model of the expected life-cycle cost for ice-resistant platforms based on the cost-effectiveness criterion is proposed. Multiple performance demands of the structure, facilities and crew members, associated with the failure assessment criteria and evaluation functions of costs of construction, consequences of structural failure modes including damage, revenue loss, death, and injury, as well as discounting cost over time are considered. Different reliability analysis approaches involved in life-cycle cost evaluation, such as the global reliability under the extreme ice load, the dynamic reliability, and fatigue life induced by ice vibration, are studied. The proposed life-cycle optimum design formulas are applied to a typical ice-resistant platform in Bohai Bay, and the results demonstrate that the life-cycle cost-effective optimum design model is more rational compared with the conventional static design and the optimum dynamic design.

FIGURES IN THIS ARTICLE
<>
Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Global resistance model of offshore platforms

Grahic Jump Location
Figure 2

Failure probabilities of different damage levels under the extreme static ice load

Grahic Jump Location
Figure 3

Failure probabilities of different damage levels (crew members/facility) under the dynamic ice load

Grahic Jump Location
Figure 4

Time-dependent fatigue life of various deterioration functions

Grahic Jump Location
Figure 5

Costs versus structural global stiffness in the service life

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In