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Fire performance of metal-free timber connections


Reference:

Brandon, D., Maluk, C., Ansell, M. P., Harris, R., Walker, P., Bisby, L. and Bregulla, J., 2015. Fire performance of metal-free timber connections. Proceedings of Institution of Civil Engineers: Construction Materials, 168 (4), pp. 173-186.

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Official URL:

http://dx.doi.org/10.1680/coma.14.00055

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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.

Details

Item Type Articles
CreatorsBrandon, D., Maluk, C., Ansell, M. P., Harris, R., Walker, P., Bisby, L. and Bregulla, J.
DOI10.1680/coma.14.00055
Related URLs
URLURL Type
http://www.scopus.com/inward/record.url?scp=84938078347&partnerID=8YFLogxKUNSPECIFIED
Uncontrolled Keywordscomposite structures,fire engineering,timber structures
DepartmentsFaculty of Engineering & Design > Architecture & Civil Engineering
Research Centres & Institutes > Institute for Sustainable Energy and the Environment
Research Centres & Institutes > Institute for Policy Research
Research CentresBRE Centre in Innovative Construction Materials
Materials Research Centre
Building Research Park
RefereedYes
StatusPublished
ID Code47984

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