Comparison of uncertainty models in reliability analysis of offshore structures under marine corrosion

verfasst von

M. Q. Zhang, M. Beer, S. T. Quek, Y. S. Choo

Abstract

Reliability analysis of existing offshore structures in seawater conditions requires realistic models for corrosion. In this paper, a probabilistic model for marine corrosion is adopted. Due to scarce and imprecise information, the model parameters cannot be specified precisely and are merely known in form of bounds. To deal with this issue, selected uncertainty models are applied, and their features are compared. The investigation includes pure probabilistics, interval modeling, fuzzy methods, and imprecise probabilities. The models are applied to find an upper bound for the failure probability. The results are compared in view of information content and numerical efficiency. For the comparative study a simple plate structure is used, for which reference results are available. Then, the investigation is extended to a fixed offshore platform.

Externe Organisation(en)

National University of Singapore

Typ

Artikel

Journal

Structural safety

Band

32

Seiten

425-432

Anzahl der Seiten

8

ISSN

0167-4730

Publikationsdatum

11.2010

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Tief- und Ingenieurbau, Bauwesen, Sicherheit, Risiko, Zuverlässigkeit und Qualität

Ziele für nachhaltige Entwicklung

SDG 14 – Lebensraum Wasser

Elektronische Version(en)

https://doi.org/10.1016/j.strusafe.2010.04.003 (Zugang: Geschlossen)