Determination of environmental load factors for ISO 19902 code in offshore Malaysia using FORM structural reliability method

Nizamani, Z. and Kurian, V.J. and Liew, M.S. (2014) Determination of environmental load factors for ISO 19902 code in offshore Malaysia using FORM structural reliability method. Ocean Engineering, 92. pp. 31-43.

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Environmental load factor, used for the design of Jacket platform design in Malaysia, are based on calibration of platforms located in Gulf of Mexico and North Sea. This load factor is assumed to be high for locations where moderate climate governs i.e. regions lying near equator like Malaysia which is at 7° north of the equator. For Jacket platforms, safety can be achieved by taking into consideration of hazards produced by rare events of wave, wind and current. Environmental loads are not like live loads acting on land-based structure but are more severe due to unpredictable weather conditions. These environmental loads can act with unexpected severity on offshore structures. Material strength of tubular components and joints plays significant role against risk. The resistance can also be reduced because of damage to Jacket, continuous action of wave forces causing fatigue and corrosion. Four platforms from three different regions of Malaysia were selected for the reliability analysis. Probabilistic techniques were used to evaluate and estimate the load and resistance uncertainty. FORM method of reliability was used for structural reliability analysis of Jackets. Modified environmental load factor is proposed for offshore Malaysia considering component, joint and system reliability analysis based on calibration. © 2014 Elsevier Ltd.

Item Type: Article
Impact Factor: cited By 5
Uncontrolled Keywords: Environmental loads; Jacket platforms; Load uncertainty; Malaysia; Structural reliability; Continuous actions; Material strength; Probabilistic technique; Structural reliability analysis; Land Based structures, Probability distributions; Reliability analysis, corrosion; environmental factor; fatigue; offshore structure; probability; reliability analysis; standardization; steel jacket platform; uncertainty analysis; building code; calibration; structural analysis; wave-structure interaction; loading, Atlantic Ocean; Gulf of Mexico; Malaysia; North Sea, Calibration; Drilling platforms; Fatigue damage; Loads (forces); Offshore structures; Probability distributions; Strength of materials; Structural analysis; Uncertainty analysis; Environmental design; Reliability
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 25 Mar 2022 08:54
Last Modified: 25 Mar 2022 08:54

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