Fire performance of metal-free timber connections

Daniel Brandon, Cristian Maluk, Martin P. Ansell, Richard Harris, Pete Walker, Luke Bisby, Julie Bregulla

Research output: Contribution to journalArticle

  • 2 Citations

Abstract

The fire performance of heavy timber frame structures is often limited by the poor fire performance of its connections. Conventional timber connections, dowelled or toothed plate connections typically use steel as a connector material. In a fire, the steel parts rapidly conduct heat into the timber, leading to reduced fire performance. Replacing metallic connectors with alternative non-metallic, low thermal conductivity connector materials can, therefore, lead to improved connection performance in fire. This paper presents an experimental study into the fire performance of metal-free timber connections comprising a hot-pressed plywood flitch plate and glassfibre- reinforced polymer dowels. The thermal behaviour of the connections at elevated temperatures is studied using a standard cone calorimeter apparatus and a novel heat transfer rate inducing system. The latter is a fire testing system developed at the University of Edinburgh. The mechanical behaviour of the connection during severe heating was also studied using an environmental chamber at temperatures up to 610°C. The results demonstrate that heat transfer in the non-metallic connections is governed by the thermal properties of the timber, resulting in significant enhancements in connection fire performance.

LanguageEnglish
Pages173-186
Number of pages14
JournalProceedings of Institution of Civil Engineers: Construction Materials
Volume168
Issue number4
DOIs
StatusPublished - Aug 2015

Fingerprint

Timber
Fires
Metals
Steel
Flammability testing
Environmental chambers
Heat transfer
Plywood
Calorimeters
Cones
Thermal conductivity
Polymers
Thermodynamic properties
Heating
Temperature

Keywords

  • Composite structures
  • Fire engineering
  • Timber structures

Cite this

Brandon, D., Maluk, C., Ansell, M. P., Harris, R., Walker, P., Bisby, L., & Bregulla, J. (2015). Fire performance of metal-free timber connections. DOI: 10.1680/coma.14.00055

Fire performance of metal-free timber connections. / Brandon, Daniel; Maluk, Cristian; Ansell, Martin P.; Harris, Richard; Walker, Pete; Bisby, Luke; Bregulla, Julie.

In: Proceedings of Institution of Civil Engineers: Construction Materials, Vol. 168, No. 4, 08.2015, p. 173-186.

Research output: Contribution to journalArticle

Brandon, D, Maluk, C, Ansell, MP, Harris, R, Walker, P, Bisby, L & Bregulla, J 2015, 'Fire performance of metal-free timber connections' Proceedings of Institution of Civil Engineers: Construction Materials, vol. 168, no. 4, pp. 173-186. DOI: 10.1680/coma.14.00055
Brandon D, Maluk C, Ansell MP, Harris R, Walker P, Bisby L et al. Fire performance of metal-free timber connections. Proceedings of Institution of Civil Engineers: Construction Materials. 2015 Aug;168(4):173-186. Available from, DOI: 10.1680/coma.14.00055
Brandon, Daniel ; Maluk, Cristian ; Ansell, Martin P. ; Harris, Richard ; Walker, Pete ; Bisby, Luke ; Bregulla, Julie. / Fire performance of metal-free timber connections. In: Proceedings of Institution of Civil Engineers: Construction Materials. 2015 ; Vol. 168, No. 4. pp. 173-186
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