NOVEL APPROACH TO THE ASSESSMENT OF THE FIRE RESISTANCE OF OFFSHORE STRUCTURES

This paper is concerned with deterministic and probabilistic assessment of degradation of strength and resistance of fixed offshore structures during fire exposure. The structural behaviour under thermal loading is modelled using nonlinear analysis with material deterioration taken into account. The time dependent degradation of a structure is described by a sequence of time independent solutions, calculated at time/temperature steps. Two recent developments have made this challenging and previously unsolved task a realistic alternative. Firstly, methodology based upon VDM has significantly improved the efficiency of analysis of structural modifications such as progressive plastification or change of stiffness and resistance of members. Secondly, advanced sampling techniques have improved the efficiency of Monte Carlo simulation. The approach based on the combination of these two methods offers a new possibility for engineers concerned with reliability of offshore structures.

• Supplemental Notes:
  • OMAE 1991, 10th Intl Conf on Offshore Mechanics & Arctic Engng; 23-28 June 1992; Stavanger, Norway. Sponsored by ASME et al. Procs. Publ by ASME, Vol II, p 319 [11 p, 10 ref, 12 fig]
• Authors:
  • Gierlinski, J T
  • Middleton, C I
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Fire resistance; Offshore structures; Structural analysis
• Uncontrolled Terms: Probabilistic methods
• Old TRIS Terms: Deterministic systems
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00703118
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM