Fire performance and design of load bearing light gauge steel frame wall systems exposed to realistic design fires
Ariyanayagam, Anthony Deloge & Mahendran, Mahen (2015) Fire performance and design of load bearing light gauge steel frame wall systems exposed to realistic design fires. In ASEC 2014 Conference Structural Engineering in Australasia, 09-11 July 2014, Sky City, Auckland, New Zealand.
This paper presents the fire performance results of light gauge steel frame (LSF) walls lined with single and double plasterboards, and externally insulated with rock fibre insulation as obtained using a finite element analysis based parametric study. A validated numerical model was used to study the influence of various fire curves developed for a range of compartment characteristics. Data from the parametric study was utilized to develop a simplified method to predict the fire resistance ratings of LSF walls exposed to realistic design fire curves. Further, this paper also presents the details of suitable fire design rules based on current cold-formed steel standards and the modifications proposed by previous researchers. Of these the recently developed design rules by Gunalan and Mahendran  were investigated to determine their applicability to predict the axial compression strengths and fire resistance ratings (FRR) of LSF walls exposed to realistic design fires. Finally, the stud failure times obtained from fire design rules and finite element studies were compared for LSF walls lined with single and double plasterboards, and externally insulated with rock fibres under realistic design fire curves.
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|Item Type:||Conference Paper|
|Keywords:||Light gauge steel frame walls, Realistic design fire curves, Axial compression strength, Fire resistance rating, Fire design rules|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Construction Materials (090503)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2014 [please consult the author]|
|Deposited On:||14 Jul 2014 23:40|
|Last Modified:||31 May 2015 08:12|
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