Official Journal of the Japan Wood Research Society
From: Effective lateral resistance of combined timber joints with nails and bolts
t (mm) | K (kN/mm) | U (kN mm) | P max (kN) | δ P (mm) | P y (kN) | δ y (mm) | P u (kN) | μ | 0.2P u (2μ − 1)0.5 (kN) | 2/3P max (kN) | P a (kN) |
---|---|---|---|---|---|---|---|---|---|---|---|
Nailed joints | |||||||||||
 60 | 13.3 | 260 | 22.0 | 5.4 | 12.5 (9.0) | 0.96 | 20.5 | 8.64 | 16.5 (14.2) | 14.7 (13.2) | 9.0 |
 90 | 13.1 | 231 | 21.0 | 4.7 | 11.0 (9.4) | 0.85 | 19.2 | 8.78 | 15.5 (13.7) | 14.0 (12.1) | 9.4 |
 120 | 9.5 | 256 | 21.6 | 6.9 | 11.8 (8.7) | 1.25 | 20.0 | 6.56 | 13.9 (11.1) | 14.4 (12.1) | 8.7 |
Bolted joints | |||||||||||
 60 | 12.5 | 185 | 21.8 | 7.4 | 13.0 (7.2) | 1.05 | 20.7 | 6.13 | 13.4 (9.0) | 14.5 (7.2) | 7.2 |
 90 | 7.4 | 397 | 34.8 | 13.8 | 19.0 (13.6) | 2.60 | 30.4 | 3.71 | 15.2 (12.1) | 23.2 (14.3) | 12.1 |
 120 | 6.0 | 586 | 40.7 | 19.4 | 22.1 (18.7) | 3.74 | 33.7 | 3.55 | 16.6 (13.8) | 27.1 (24.6) | 13.8 |
Combined joints | |||||||||||
 60 | 8.9 | 518 | 43.0 | 8.8 | 0.2a (−7.8a) | 1.96 | 42.8 | 3.13 | 19.1 (15.9) | 28.7 (21.3) | −7.8a |
 90 | 7.8 | 799 | 53.6 | 14.8 | 64.0b (−5.0a) | 5.96 | 53.3 | 2.71 | 22.1 (13.3) | 35.7 (27.9) | −5.0a |
 120 | 7.1 | 982 | 55.2 | 16.1 | 89.5b (−133a) | 6.76 | 54.8 | 2.86 | 23.5 (18.7) | 36.8 (33.0) | −133a |