Shear tests of double shear plate connector joints in sugi—Japanese larch composite glulam beams |
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Authors: | Yasushi Nakashima Masaki Harada Tomoyuki Hayashi Masahiko Karube Tadashi Higashino |
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Institution: | (1) Iwate Prefectural Forestry Technology Center, 560-11 Kemuyama, Yahaba, Iwate 028-3623, Japan;(2) Laboratory of Engineered Wood and Joints, Department of Wood Engineering, Forestry and Forest Products Research Institute, Tsukuba 305-8687, Japan |
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Abstract: | To study the shear strength of structural joints in sugi (Cryptomeria japonica D. Don) — Japanese larch (Larix kaempferi Carriere) composite glulam beams using structural connectors with double shear plates, shear tests were conducted on two
types of joint (post-beam and girder-beam). Two types of the composite beam (240 and 300 mm depth) were prepared for the tests.
Ordinary sugi glulam beam and Japanese larch glulam beam were also used as control specimens. The load—displacement curves
of joints in composite beams were somewhere between those of sugi and Japanese larch glulam beams. The shear strength of joints
in composite beams was higher than that in the sugi glulam beam control. However, the allowable loads of the joints in composite
beams were lower than those in the sugi beam with 240 mm depth. Large variation of maximum load of the joints in the composite
beams resulted in lower allowable load. |
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Keywords: | Sugi— larch composite glulam Double shear plates Drift pins Structural joints Shear strength |
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