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TECHNICAL PAPERS

Assessment of Offshore Platforms Under Subsidence—Part II: Analysis and Results

[+] Author and Article Information
Alok K. Jha

Risk Management Solutions, Menlo Park, CA 94025

Omer K. Kiciman

Bechtel, San Francisco, CA 91341

Joseph M. Gebara

Aker Engineering, Inc., Houston, TX 77079

Bernhard Stahl

Houston, TX 77052

Knut H. Dahl-Stamnes

BP Amoco Norge AS, Stavanger, Norway

J. Offshore Mech. Arct. Eng 122(4), 267-273 (Apr 21, 2000) (7 pages) doi:10.1115/1.1313531 History: Received October 01, 1998; Revised April 21, 2000
Copyright © 2000 by ASME
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References

Figures

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Pushover analysis directions
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Platform A base shear (broadside, 10.5 ft subsidence)
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Platform A deformed shape and member nonlinear events (broadside, 10.5 ft subsidence)
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Platform capacity and wave load as a function of wave height for 10.5 ft subsidence
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Ultimate strength of platforms as a function of subsidence
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Reserve strength ratio versus subsidence
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Annual failure probabilities for Platform A
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Platform annual probability of failure and acceptance limits
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Base shear for Platform C (34.1 ft subsidence)
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Platform A deformed shape and member nonlinear events for subsidences of 10.5 ft (on left) and 34.1 ft (on right)
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Base shear versus deck displacement for Platform A with 10.5 and 34.1-ft subsidence values

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