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http://dx.doi.org/10.5658/WOOD.2017.45.5.535

Evaluation of The Lateral Strength Performance of Rigid Wooden Portal Frame  

Lee, In-Hwan (Program of Forest Biomaterials Engineering, Division of Forest Material Science & Engineering, Kangwon National University)
Song, Yo-Jin (Program of Forest Biomaterials Engineering, Division of Forest Material Science & Engineering, Kangwon National University)
Hong, Soon-Il (Program of Forest Biomaterials Engineering, Division of Forest Material Science & Engineering, Kangwon National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.45, no.5, 2017 , pp. 535-543 More about this Journal
Abstract
For column-beam gussets of wooden structures, slit-processed members inserted with a steel plate are used in general. In this study, a rigid portal frame bonded with a joint was fabricated and a semi-rigid portal frame was fabricated by making a wooden gusset, a replacement for steel plate, of which a half was integrated into the column member and the other half was joined with the beam member by drift-pins. The lateral strength performance of the wooden portal frame was compared with that of the steel plate-inserted joint portal frame. The lateral strength performance was evaluated through a perfect elasto-plasticity model analysis, sectional stiffness change rate, and short-term permissible shear strength. As a result of the experiment, the maximum strength of the rigid portal frame was lower than that of the steel plate-inserted joint portal frame. The yield strength and ultimate strength were calculated as 0.58 and 0.48, respectively, but the measurements of initial stiffness and cumulative ductility improved by 1.35 and 1.1, respectively. As a result of the perfect elasto-plasticity model analysis of the semi-rigid portal frame, the maximum strength was lower than that of the rigid portal frame, but the toughness after failure was excellent. Thus, the ultimate strength was higher by 1.05~1.07. The steel plate-inserted portal frame showed rapid decrease in stiffness with the progress of repeated tests, but the stiffness of the portal frames with a wooden joint decreased slowly.
Keywords
column-beam; gussets; joint; portal frame; rigid; semi-rigid; strength;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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