Transcription of Offshore Structural Design - Structural Engineers
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11 Offshore Structural DesignOffshore Structural DesignDetail EngineeringDetail EngineeringFixed PlatformsFixed of Fixed Platforms3 Design of structuresIn-place Phase (Piles, Jacket ,Deck Integral)Three types of analysis are performed: Survival state----- wave/current/wind attack with 50 or 100 years recurrence period. Operational state--- wave/current/wind attack with 1 or 5 years recurrence period, under full operation. Fatigue assessment for Design life. analyses are performed on the complete and intact structure. Assessments at damaged structures, with one member deleted, and assessments of collision situations are occasionally of structures(contd) Majority of Structural analyses are based on the linear theory of elasticity for total system behaviour.
Boat landing models shall be connected to the jacket models such that ... • Jacket legs, bracing, conductor and caissons 12mm • Pipe casings and sump caissons (wrapped) 12mm wrapped plate • Fenders, bumpers and boat landing members 6 mm ... due to higher surface roughness. In addition, it increases the unit mass of the member, resulting ...
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