Numerical modelling and full scale testing of load bearing steel walls under real fires

Ariyanayagam, Anthony Deloge & Mahendran, Mahen (2013) Numerical modelling and full scale testing of load bearing steel walls under real fires. In Advances in Building Sciences : Proceedings of the International Conference held at IIT Madras, Chennai, India, Indial Institute of Technology Madras, Indian Institute of Technology Madras, Chennai, India, pp. 307-316.


Fire safety has become an important part in structural design due to the ever increasing loss of properties and lives during fires. Fire rating of load bearing wall systems made of Light gauge Steel Frames (LSF) is determined using fire tests based on the standard time-temperature curve given in ISO 834. However, modern residential buildings make use of thermoplastic materials, which mean considerably high fuel loads. Hence a detailed fire research study into the performance of load bearing LSF walls was undertaken using a series of realistic design fire curves developed based on Eurocode parametric curves and Barnett’s BFD curves. It included both full scale fire tests and numerical studies of LSF walls without any insulation, and the recently developed externally insulated composite panels. This paper presents the details of fire tests first, and then the numerical models of tested LSF wall studs. It shows that suitable finite element models can be developed to predict the fire rating of load bearing walls under real fire conditions. The paper also describes the structural and fire performances of externally insulated LSF walls in comparison to the non-insulated walls under real fires, and highlights the effects of standard and real fire curves on fire performance of LSF walls.

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ID Code: 57766
Item Type: Conference Paper
Refereed: Yes
Funders: ARC
Keywords: Light gauge steel frames, Load bearing steel stud walls, Finite element modelling, Real building fire, Fire rating , Cold-formed steel structures
Subjects: 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 2013 please consult the authors
Deposited On: 04 Mar 2013 23:14
Last Modified: 09 Oct 2014 12:36

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