A comparison of jacket and jack-up structural reliability

This paper presents the methodology and key findings of a study aimed at comparing the reliability of a representative jacket platform with that of a representative jack-up unit. Both structures were assumed to operate at the same location under identical environmental conditions (typical of the Nor...

Full description

Saved in:
Bibliographic Details
Published in:Marine structures 2001-07, Vol.14 (4), p.507-521
Main Authors: Dier, A.F, Morandi, A.C, Smith, D, Birkinshaw, M, Dixon, A
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
Foundations
Ground, air and sea transportation, marine construction
Hydraulic constructions
Jack-up
Jacket
Marine
Marine construction
Offshore structure (platforms, tanks, etc.)
Pushover analysis
Redundancy
Reliability
Reserve strength
Stresses. Safety
Structural analysis. Stresses
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents the methodology and key findings of a study aimed at comparing the reliability of a representative jacket platform with that of a representative jack-up unit. Both structures were assumed to operate at the same location under identical environmental conditions (typical of the North Sea). Each structure was designed to the limits of their relevant recommended practice (API RP2A LRFD and SNAME T&R Bulletin 5-5A for the jacket and jack-up, respectively) to ensure a consistent comparison. This was followed by component and system reliability analyses using detailed modelling for both structures. Initially, the foundation failure was suppressed to enable the structure response to be compared and then, in the final stage of the study, detailed foundation modelling was included to examine the effect of foundation reliability on the overall structural reliability. For the specific site and environmental conditions considered in the study, it is concluded that the structures do not realise substantially different structural system reliability levels when designed/assessed to their most recent practices.
ISSN:0951-8339
1873-4170
DOI:10.1016/S0951-8339(00)00052-6