Predicting the performance of LSF walls made of hollow flange channel sections in fire

Kesawan, Sivakumar & Mahendran, Mahen (2016) Predicting the performance of LSF walls made of hollow flange channel sections in fire. Thin-Walled Structures, 98 Part A, pp. 111-126.

[img] Accepted Version (PDF 1MB)
Administrators only until 1 January 2018 | Request a copy from author

View at publisher


Fire resistance of load bearing Light Gauge Steel Frame (LSF) wall systems is important to protect lives and properties in fire accidents. Recent fire tests of LSF walls made of the new cold-formed and welded hollow flange channel (HFC) section studs and the commonly used lipped channel section (LCS) studs have shown the influence of stud sections on the fire resistance rating (FRR) of LSF walls. To advance the use of HFC section studs and to verify the outcomes from the fire tests, finite element models were developed to predict the structural fire performance of LSF walls made of welded HFC section studs. The developed models incorporated the measured non-uniform temperature distributions in LSF wall studs due to the exposure of standard fire on one side, and accurate elevated temperature mechanical properties of steel used in the stud sections. These models simulated the various complexities involved such as thermal bowing and neutral axis shift caused by the non-uniform temperature distribution in the studs. The finite element analysis (FEA) results agreed well with the full scale fire test results including the FRR, outer hot and cold flange temperatures at failure and axial deformation and lateral displacement profiles. They also confirmed the superior fire performance of LSF walls made of HFC section studs. The applicability of both transient and steady state FEA of LSF walls under fire conditions was verified in this study, which also investigated the effects of using various temperature distribution patterns across the cross-section of HFC section studs on the FRR of LSF walls. This paper presents the details of this numerical study and the results.

Impact and interest:

6 citations in Scopus
7 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

ID Code: 89633
Item Type: Journal Article
Refereed: Yes
Keywords: LSF walls, Hollow flange channel sections, Fire resistance rating (FRR), Finite element models, Non-uniform temperature distribution
DOI: 10.1016/j.tws.2015.03.014
ISSN: 0263-8231
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 Elsevier
Deposited On: 29 Oct 2015 01:45
Last Modified: 01 Nov 2015 04:52

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page