Rational timber frame structure jointed with glass fiber reinforced nylon plate, 2: Strength properties of drift-pin joints under static loading
2009
Uchisako, T.(Mie Univ., Tsu (Japan)) | Tokuda, M.
A new drift-pin joint consisting of a glass-fibre-reinforced nylon (GFRP) plate inserted into a slit of the timber with steel pipe drift-pins was designed. In the previous report, basic shear properties of the joint with a single drift-pin were examined. In this report, various types of GFRP timber frame joints were subjected to tension and shear resistance tests, and strength properties were evaluated in comparison with those of traditional timber joints and metal connected timber joints. The estimated allowable strength of column-to-sill joints obtained by vertical pull-up tests was 15.3 kN. The value was higher than that of nailed joints with steel side plates (VP: Z marked connector) but the average value of initial stiffness was lower. The estimated allowable strength of girder-to-beam joints obtained by shear resistance tests was 20.7 kN. The value was lower than that of dovetail joints but average values of maximum load, initial stiffness, yield strength and ultimate strength were higher. The estimated allowable strength of column-to-girder joints in shear resistance tests was 28.1 kN. The result was affected by brittle failure due to fracture of GFRP plates and the value was lower than that of beveled dado joints, but average values of initial stiffness, yield strength and ultimate strength were higher.
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