2024-03-29T09:54:33Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00010522
2023-01-06T05:04:12Z
1016:1018:1019:1029
生材及び人工乾燥材の軸組における梁のクリープ(Ⅰ) 梁の相対たわみにおける差異
Creep of the Beam in Japanese Conventional Structures Composed of Green and Kiln-dried Timber. I. Differences in Relative Deflections of the Beams
Takeda, T
Arima, T
Mechano-sorptive creep
shrinkage
relative humidity
temperature
The main purpose of this research was to evaluate the bending creep of beams in Japanese conventional structures (posts and beam constructions), known in Japanese as ""jiku gumi."" We built two wooden structures in order to carry out creep tests : one was composed of green timber (G) and the other of kiln-dried timber (D). Each structure was composed of four sills, four posts, two girders, and two beams. The tenon and mortise at specific locations in the members were processed with a molding machine at a sawmill. Long-term design loads were applied at the top of each beam. The deflections at mid-span were measured for each beam. Results showed that the ratios of total deflection to initial defection (relative deflection) over a 878-day period were 3.75 and 2.26 for the G and D structures, respectively. After unloading, the ratios became 3.04 and 1.50 for G and D, respectively. The additional relative creep deflection (=relative deflection-1) observed in G were approximately two times that found in D.
Article
信州大学農学部紀要. 42(1-2): 17-25 (2006)
journal article
信州大学農学部
2006-03-03
application/pdf
信州大学農学部紀要
1-2
42
17
25
0583-0621
https://soar-ir.repo.nii.ac.jp/record/10522/files/v42_03.pdf
eng