Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis

Abstract—Issues regard to continued usage of aging jacket platforms and Enhanced Oil Recovery (EOR) affecting the aged fixed jacket platforms owned by PETRONAS in Malaysian waters was studied. Pile buckling together with lateral soil failure and lengthy/ monotonous reliability analysis were iden...

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Main Authors: Kurian, V.J., Mohamed , M.A.W., Voon, M.C., Goh, S.S., Liew, M. S.
Format: Conference or Workshop Item
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.10127 /
Published: 2013
Subjects:
TA Engineering (General). Civil engineering (General)
TC Hydraulic engineering. Ocean engineering
Online Access: http://eprints.utp.edu.my/10127/1/1569763331.pdf
http://eprints.utp.edu.my/10127/
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spelling utp-eprints.101272017-03-20T01:59:25Z Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis Kurian, V.J. Mohamed , M.A.W. Voon, M.C. Goh, S.S. Liew, M. S. TA Engineering (General). Civil engineering (General) TC Hydraulic engineering. Ocean engineering Abstract—Issues regard to continued usage of aging jacket platforms and Enhanced Oil Recovery (EOR) affecting the aged fixed jacket platforms owned by PETRONAS in Malaysian waters was studied. Pile buckling together with lateral soil failure and lengthy/ monotonous reliability analysis were identified as the core research issues related to the problem statement. SACS software was used on existing jacket platform structural model to carry out pushover analyses. Reserve Strength Ratio (RSR) was obtained through different combinations of dead, live, and storm loads. It was found that live load combinations had insignificance on the RSR value compared to variation in storm directions. RSR values from directional loads and resistance are very much volatile and significant. The response of the pile foundation to the environmental load is strongly affected by pile soil interaction. Since the development of p-y curve represents the pile foundation and soil structure interaction, it was used to model the soil resistance to the pile movements and the results obtained were analyzed. Collapse analysis with PSI yields lower RSR compared to an analysis without PSI. Inclusion of PSI (pile soil interaction) increased the RSR value in the range of 5.6% to 50.1%. A trend called slender column and truss system effects were introduced for the pushover analysis with and without PSI, respectively. Sensitivity study was in agreement with failure mechanisms experienced in the pushover analysis. Index Terms — Reliability, Jacket Platforms, RSR, p-y curve, pile-soil interaction. 2013 Conference or Workshop Item PeerReviewed application/pdf http://eprints.utp.edu.my/10127/1/1569763331.pdf Kurian, V.J. and Mohamed , M.A.W. and Voon, M.C. and Goh, S.S. and Liew, M. S. (2013) Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis. In: ISBEIA 2013, 22-25 Sep 2013, Kuching. http://eprints.utp.edu.my/10127/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
topic TA Engineering (General). Civil engineering (General)
TC Hydraulic engineering. Ocean engineering
spellingShingle TA Engineering (General). Civil engineering (General)
TC Hydraulic engineering. Ocean engineering
Kurian, V.J.
Mohamed , M.A.W.
Voon, M.C.
Goh, S.S.
Liew, M. S.
Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis
description Abstract—Issues regard to continued usage of aging jacket platforms and Enhanced Oil Recovery (EOR) affecting the aged fixed jacket platforms owned by PETRONAS in Malaysian waters was studied. Pile buckling together with lateral soil failure and lengthy/ monotonous reliability analysis were identified as the core research issues related to the problem statement. SACS software was used on existing jacket platform structural model to carry out pushover analyses. Reserve Strength Ratio (RSR) was obtained through different combinations of dead, live, and storm loads. It was found that live load combinations had insignificance on the RSR value compared to variation in storm directions. RSR values from directional loads and resistance are very much volatile and significant. The response of the pile foundation to the environmental load is strongly affected by pile soil interaction. Since the development of p-y curve represents the pile foundation and soil structure interaction, it was used to model the soil resistance to the pile movements and the results obtained were analyzed. Collapse analysis with PSI yields lower RSR compared to an analysis without PSI. Inclusion of PSI (pile soil interaction) increased the RSR value in the range of 5.6% to 50.1%. A trend called slender column and truss system effects were introduced for the pushover analysis with and without PSI, respectively. Sensitivity study was in agreement with failure mechanisms experienced in the pushover analysis. Index Terms — Reliability, Jacket Platforms, RSR, p-y curve, pile-soil interaction.
format Conference or Workshop Item
author Kurian, V.J.
Mohamed , M.A.W.
Voon, M.C.
Goh, S.S.
Liew, M. S.
author_sort Kurian, V.J.
title Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis
title_short Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis
title_full Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis
title_fullStr Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis
title_full_unstemmed Reliability of Jacket Platforms in Malaysian Waters Sensitivity Study using Pushover Analysis
title_sort reliability of jacket platforms in malaysian waters sensitivity study using pushover analysis
publishDate 2013
url http://eprints.utp.edu.my/10127/1/1569763331.pdf
http://eprints.utp.edu.my/10127/
_version_ 1741196109728972800
score 11.62408

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