Structural optimisation, risk and reliability paper
Moss, PJ, Abu, AK, Dhakal, RP 2014, 'Incremental fire analysis (IFA) for probabilistic fire risk assessment', in ST Smith (ed.), 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23), vol. II, Byron Bay, NSW, 9-12 December, Southern Cross University, Lismore, NSW, pp. 707-712. ISBN: 9780994152008.
In this paper, the concept of a probabilistic fire risk analysis method is presented in line with the seismic risk assessment approach. The probabilistic fire risk assessment approach runs through a series of probabilistic interrelationships between different variables representing fire severity (called the Intensity Measure IM), structural response (called the Engineering Damage Parameter EDP) and damage/loss (called the Damage Measure DM). The paper explains the development of a probabilistic interrelationship between IM and EDP through incremental fire analysis (IFA). For this purpose, a series of SAFIR analysis of a simple two span reinforced concrete beam subjected to different fire profiles have been conducted and are used to illustrate the required approach. Although a single EDP (maximum deflection) is considered in this investigation, two different IMs (maximum temperature and total radiant energy) are used. It is found that the radiant energy is more efficient than the maximum temperature in representing fire severity.