Thermal performance of load-bearing walls made of cold-formed hollow flange channel sections in fire

Sivakumar, Kesawan & Mahendran, Mahen (2016) Thermal performance of load-bearing walls made of cold-formed hollow flange channel sections in fire. Fire and Materials, 40(5), pp. 704-730.

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Abstract

Typical load-bearing LSF walls are made of conventional lipped channel section studs and gypsum plasterboards. Current research at the QUT is investigating the effects of using new thin-walled stud sections on the fire resistant rating of LSF walls, in particular the use of Hollow Flange Channel (HFC) sections. A sound knowledge on the thermal performance of these LSF walls is essential, but expensive and time consuming nature of fire tests has acted as a barrier. In this study finite element models were developed to predict the thermal performance of load bearing LSF walls made of HFC section studs exposed to fire on one side. The developed models were validated using the results of five full scale standard fire tests of LSF walls. They were then extended to perform a parametric study where the effects of stud dimensions, geometries, spacings and wall configuration were evaluated. The hot and cold flange time-temperature profiles of HFC studs were developed as a function of the above parameters, which can be used to predict the FRR of LSF walls. This paper presents the fire tests, and details of the developed finite element models and the thermal performance results of LSF walls made of HFC studs.

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ID Code: 96258
Item Type: Journal Article
Refereed: Yes
Keywords: LSF walls, Hollow flange channel sections, Thermal performance, Finite element analysis, Fire
DOI: 10.1002/fam.2337
ISSN: 0308-0501
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Civil Engineering not elsewhere classified (090599)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Materials Engineering not elsewhere classified (091299)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 John Wiley & Sons, Ltd.
Copyright Statement: This is the peer reviewed version of the following article: Kesawan, S., and Mahendran, M. (2015) Thermal performance of load-bearing walls made of cold-formed hollow flange channel sections in fire. Fire Mater., which has been published in final form at https://doi.org/10.1002/fam.2337. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Deposited On: 19 Jun 2016 22:34
Last Modified: 19 Sep 2016 03:04

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