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Calibration of Partial Safety Factors Through the Inverse FORM Method

[+] Author Affiliations
Francisco L. Silva-González

Instituto Mexicano del Petróleo, México, D.F., México

Paper No. OMAE2007-29646, pp. 459-466; 8 pages
doi:10.1115/OMAE2007-29646
From:
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 2: Structures, Safety and Reliability; Petroleum Technology Symposium
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4268-1 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME

abstract

A calibration method which uses the so-called inverse FORM approach is proposed. The objective is to find the design point on a hypersphere in U-space, whose radius is the target reliability index, which maximizes the response that the structural system must withstand. Once the design point is determined, the safety factors can be calculated. It is demonstrated that the computational cost of the proposed method is less than the computational cost of traditional calibration techniques. The proposed method is illustrated by means of three examples: parabolic, Eurocode and suction caisson design equations.

Copyright © 2007 by ASME
Topics: Safety , Calibration

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