Tensile Properties Of Utgulisanji Connection

The objective of this study was to evaluate tensile properties of utgulisanji connection. The utgulisanji connection is a traditional wood-to-wood connection used in wood-frame buildings in Korea. Different sizes (120 x 120, 180 x 180, 180 x 240, 240 x 240 mm(2)) of glulam beam at 2.4 m length made from Larix kaempferi and Pinus koraiensis were used to determine the tensile properties of utgulisanji connection. Most failure occurred at the re-entrant corner of utgulisanji connections. Different elasto-plastic behaviors of utgulisanji connection made from different species under tension indicated that tensile properties of utgulisanji connection could not be determined by specific gravity, but by a combination of manufacturing parameters with properties of materials. Initial stiffness, yield load, and maximum load of utgulisanji connections determined using three different methods increased with the size of member, whereas the yield displacement showed an inconsistent trend with the size of member.