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Shear Tests of Glulam at Elevated Temperatures

https://research.thinkwood.com/en/permalink/catalogue563
Year of Publication
2014
Topic
Fire
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Author
Dhima, Dhionis
Audebert, Maxime
Racher, Patrick
Bouchaïr, Abdelhamid
Taazount, Mustapha
Publisher
Wiley Online Library
Year of Publication
2014
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Topic
Fire
Mechanical Properties
Keywords
Density
Shear Strength
Temperature
Thermal Gradient
Research Status
Complete
Series
Fire and Materials
Summary
Experimental investigations are conducted to characterize the evolution with temperature of the shear strength of glulam wood. To realize the tests, an original specimen with cylindrical shape has been developed and justified by a numerical study. The geometry allows obtaining thermal gradient within material to represent the real combustion of timber members, while keeping constant the temperature of sheared section. The experimental programs consider various parameters such as the presence or absence of moisture and the thermal gradient within the specimen. The experimental results are discussed and analyzed. They show the correlation between the density of the material and the reduction of its strength at high temperatures. The experimental failure loads are used to evaluate the reduction factors for wood strength depending on the temperature. These factors are compared with those given by EN1995-1-2 for the advanced calculations methods in fire situation. The comparisons show that the reduction factors given by EN1995-1-2 are conservative in comparison with the experimental results. Copyright © 2014 John Wiley & Sons, Ltd.
Online Access
Free
Resource Link
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Thermo-Mechanical Behavior of Timber in Shear: An Experimental Study

https://research.thinkwood.com/en/permalink/catalogue505
Year of Publication
2014
Topic
Fire
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Author
Audebert, Maxime
Dhima, Dhionis
Bouchaïr, Abdelhamid
Racher, Patrick
Year of Publication
2014
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Topic
Fire
Mechanical Properties
Keywords
Shear Strength
Temperature
Reduction Factors
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
The advanced calculation methods for wood structural elements in fire situations proposed by EN1995-1-2 provide reduction factors of wood strength according to the temperature. The values of these reduction factors given for compression and tension strength are relatively well documented. However, the reduction factors of wood shear strength with temperature were not studied. This study concerns experimental investigations conducted to characterize the evolution with temperature of the shear strength of wood. The tests are realized using a specific original specimen specially developed for this study. The experimental results allow evaluating the values given in EN1995-1-2.
Online Access
Free
Resource Link
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