Effects of the presence or absence and the position of glued edge joints in the lamina on the shear strength of glued laminated timber

Autor: Hirofumi Ido, Atsushi Miyatake, Yasushi Hiramatsu, Kohta Miyamoto
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Wood Science, Vol 68, Iss 1, Pp 1-9 (2022)
Druh dokumentu: article
ISSN: 1435-0211
1611-4663
DOI: 10.1186/s10086-022-02062-1
Popis: Abstract Four kinds of glued laminated timber were produced (i.e., one with a glued edge-joint and the other three with nonglued edge joints) in the lamina at different positions toward the depth direction. Shear tests using an asymmetric four-point bending method were then conducted for these glued laminated timber specimens. The results showed that although the glued edge-joint specimens had the highest shear strength in all groups, the shear strength decreased as the distance from the adjacent nonglued edge-joint plane decreased. Furthermore, the shear strength of all specimens exceeded the standard shear design strength value (2.1 N/mm2) set by the Ministry of Land, Infrastructure, Transport and Tourism, Japan. Next, the shear strength of the nonglued edge-joint specimens was estimated based on that of the glued edge-joint specimens. Although the mean-estimated shear strength was lower than the mean-measured shear strength, the possibility of the shear strength changing based on the position of the nonglued edge-joint plane specimens from that of the glued edge-joint specimens was still estimated.
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