Volume 9 Number 4 2013
DOI: 10.18057/ijasc.2013.9.4.2
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Modified One Zone Model for Fire Resistance Design of Steel Structures

Abstract: A modified one-zone model has been proposed for structural fire safety design. In the model, a quantity which considers the heat sink effect of steel members in fire compartment is added to the heat balance equation for one-zone compartment fire model. In this paper, the proposed model is solved by FEM simulations. The results from FEM simulations are verified by program OZone (V2.0). Case studies have been conducted with investigating parameters including number of steel members, compartment dimension, openin… Show more

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Cited by 7 publications
(10 citation statements)
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“…Here, the simplifications and assumptions for calculation in post-flashover fires [8,[18][19] were applied to calculate the temperature of a circular CFT column fully engulfed in a localized fire,…”
Section: Temperature Of Circular Cft Columnsmentioning
confidence: 99%
See 1 more Smart Citation
“…Here, the simplifications and assumptions for calculation in post-flashover fires [8,[18][19] were applied to calculate the temperature of a circular CFT column fully engulfed in a localized fire,…”
Section: Temperature Of Circular Cft Columnsmentioning
confidence: 99%
“…The behavior of a real fire is complex, which depends on many parameters such as active fire detection and suppression systems (smoke detector and sprinkler), fire loads (amount and distribution), combustion, ventilation, compartment size and geometry, and thermal properties of compartment boundaries [8]. In large enclosures, flashover (which is the rapid transition between a local fire and a general conflagration within a compartment when all fuel surfaces are burning [9]) is unlikely to happen, and the potential fires are characterized as pre-flashover or localized fires [10].…”
Section: Introductionmentioning
confidence: 99%
“…13, in the current approach to calculate the temperature of a component in a fire compartment, a fire curve is first derived from the one zone model, and then the curve is used to calculate the temperature of the component [9]. Since the heat sink effect of the component is not considered in the one zone model, the current approach over-predicts the temperature of the component [13]. …”
Section: Thermal Calculation In a Post-flashover Fire Environmentmentioning
confidence: 99%
“…12 gives the heat balance equation for a modified one zone model which considers the heat sink effect of the components in a fire compartment [13], HRR=q˙g+q˙w+q˙o+q˙m HRR is the heat released by combustion; q̇ g ″ is the heat storage in the gas volume; q̇ w ″ is the heat loss through the compartment boundaries (e.g. walls, ceiling, floor); q̇ o ″ is the heat loss through openings; and q̇ m ″ is the heat stored in the components.…”
Section: Thermal Calculation In a Post-flashover Fire Environmentmentioning
confidence: 99%
“…Therefore, the following simplifications and assumptions for calculation in post-flashover fires [23][24][25] were applied to calculate the temperature of steel columns surrounded by a localized fire,…”
Section: Column Surrounded By Localized Firementioning
confidence: 99%