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Effect of decay on shear performance of dowel-type timber joints

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Title: Effect of decay on shear performance of dowel-type timber joints
Authors: Sawata, Kei Browse this author →KAKEN DB
Sasaki, Takanobu Browse this author
Doi, Shuichi Browse this author
Iijima, Yasuo Browse this author
Keywords: Shear strength
Initial stiffness
Hysteresis properties
Brown rot fungus
Moisture content
Issue Date: Oct-2008
Publisher: Springer Japan
Journal Title: Journal of Wood Science
Volume: 54
Issue: 5
Start Page: 356
End Page: 361
Publisher DOI: 10.1007/s10086-008-0963-7
Abstract: Monotonic and reversed cyclic loading tests were conducted on dowel-type timber joints with varying degrees of wood decay due to Fomitopsis palustris (Berk. et Curt.), a brown rot fungus, and the effect of decay on various shear performances of dowel-type joints was investigated. For joints affected by the brown rot fungus, initial stiffness, yield load and maximum load of dowel-type joints were significantly decreased, even with a small mass loss of wood and reductions in shear performance were the largest for initial stiffness, followed by yield load and maximum load, in that order. For a 1% reduction of the yield load, initial stiffness and maximum load showed reductions of 1.15% and 0.77%, respectively. When dowel-type joints that had been exposed to the brown rot fungus were subjected to reversed cyclic loading, the gap between the dowel and the lead hole of the wood was increased and equivalent viscous damping was decreased. These results indicate that decay around the dowel lead hole especially affects the load-displacement behavior at small displacement level and dowel-type joints under cyclic loading have very low resistance to forces acting on wooden structure.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 澤田 圭

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