Influence of crossing-beam shoulder and wood species on moment-carrying capacity in a Korean traditional dovetail joint |
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Authors: | Sung-Jun Pang Jung-Kwon Oh Chun-Young Park Jun-Jae Lee |
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Institution: | (1) Department of Civil Engineering, University of Patras, P.O. Box 1424, 26504 Patras, Greece; |
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Abstract: | This study investigated the interaction effects of a crossing beam on the moment-carrying capacity of a Korean traditional
dovetail joint. In particular, the length of the crossing-beam shoulder (B
s
) and the wood species were varied as important factors. Clearly, the B
s
acts as a fastener that improves the performance of timber joints by preventing splitting failure parallel to the grain.
All the specimens experienced tension failure by tension force in the direction perpendicular to the grain; therefore, the
tension strength perpendicular to the grain could be considered an important property, and standard values could be determined
to develop a formula for predicting the structural behavior of the joints or the structural design codes of the joints. The
results of the tests indicated that the moment resistance of the joints increased as the length of the crossing B
s
and the density of the wood species increased. Joint stiffness results also indicated that the joints became stiffer when
the crossing beam had shoulders, but the results were not affected by the length of the B
s
. In addition, the joint stiffness was proportional to the density of the wood species. |
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Keywords: | |
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