낙엽송 집성재 Glued-in-rod 접합부의 인장성능 = Tensile Performance of Glued-in-rod Connections for Larch Glulam

다국어 초록 (Multilingual Abstract)

In this study, the tensile stiffness and strength of glued-in-rod connections were investigated. A hole (ø20×300mm) was drilled on the cross-section of larch glulam (moisture content: 10%). A steel bar (ø16×500mm) was inserted 300mm into the hole of the glulam. The gap between the hole of glulam and the steel bar was filled with epoxy. Six specimens were prepared and the tensile test was evaluated with UTM (100kN, Zwick) by KS F ISO 9087. The test speed was 3mm/min and a Linear Variable Differential Transformer (LVDT) was installed between the glulam and steel bar. Five of the six specimens were not failed at the maximum capacity of the UTM, and one specimen (No. 3) was destroyed at 89.3kN. When the steel bar was pulled out, the load decreased sharply, and the epoxy and wood were attached around the steel bar. The tensile stiffness was a range of 41.7 kN/mm ~ 54.1 kN/mm, and the average value was 45.8 kN/mm. The tensile strength was 0.3 kN/mm (91.5kN/300mm).