Fire performance of cold, warm and hybrid LSF wall panels using numerical studies

Perera, Dilini, Poologanathan, Keerthan, Gillie, Martin, Perampalam, Gatheeshgar, Sherlock, P., Nanayakkara, S.M.A. and Konthesingha, K.M.C. (2020) Fire performance of cold, warm and hybrid LSF wall panels using numerical studies. Thin-Walled Structures, 157. p. 107109. ISSN 0263-8231

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Official URL: https://doi.org/10.1016/j.tws.2020.107109

Abstract

Robust and pre-fabrication construction techniques are the cutting edge practice in the building industry. Cold-frame, warm-frame and hybrid-frame are three common Light-gauge Steel Frame (LSF) wall constructions applied for better energy performance. Still, the applications of the aforementioned wall configurations are restricted due to limited fire safety studies. This paper presents the fire performance investigations and results of cold-frame, warm-frame, and hybrid-frame LSF walls together with three novel configurations maintaining the same material quantities. Successfully validated 3D heat transfer finite element models were extended to six wall configurations. Time variant temperature profiles from Finite Element Analyses were evaluated against the established Load Ratio (LR)-Hot-Flange (HF) temperature curve to determine the structural fire resistance. Modified warm-frame construction showed the best performance where the Fire Resistance Level (FRL) is approximately twice that of conventional LSF wall configurations. Hence, the novel LSF wall configurations obtained by shifting the insulation material toward the fireside of the wall make efficient fire-resistant wall solutions and the new designs are proposed to be incorporated in modular constructions for enhanced fire performance.

Item Type: Article
Uncontrolled Keywords: Fire performance, Cold-frameWarm-frame, Hybrid-frame, LSF Wall configurations, Modular walls, Standard fire, FRL
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Ellen Cole
Date Deposited: 05 Jan 2021 16:55
Last Modified: 23 Feb 2021 08:30
URI: http://nrl.northumbria.ac.uk/id/eprint/45117

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