냉간성형 탄소강 이면전단 볼트접합부 최대내력에 관한 실험적 고찰

Abstract

In this study, experiments with monotonic tensile loading have been performed to investigate the structural behaviors such as ultimate strength and fracture mode of double shear cold-formed carbon steel two-bolted connection and four-bolted connection with varied end distances for providing the basic data of domestic design specification draft for cold-formed carbon steel bolted connection. Main variables are bolt arrangement (2 columns × 1 row and 2 columns × 1 rows) and end distance parallel to the direction of applied load. Specimens with two bolts failed by block shear fracture. Four-bolted connection showed two types of fracture mode at test end such as block shear fracture and tensile net-section fracture at test end. Moreover, test ultimate strengths were compared with those by current design specifications (Korean Design Standard (KDS)/American Institute of Steel Construction (AISC), Eurocode 3 (EC3), Canadian Standards Association (CSA), American Iron and Steel Institute (AISI), Architectural Institute of Japan (AIJ) and strength equations suggested by previous studies for carbon steel bolted connection. © 2022 Architectural Institute of Korea.