저니켈 듀플렉스계 스테인리스강 1행1열과 1행2열 볼트접합부의 구조거동에 관한 실험적 연구

Abstract

In this paper, experimental study has been performed to investigate the structural behaviors of cold-formed lean duplex stainless steel (STS329FLD) single shear and double shear bolted connections with single bolt and two bolts for providing the basic data of domestic design specification for stainless steel structure. Main variables are shear connection type (single shear and double shear), end distance parallel to the direction of applied force and number of bolts (single bolt and two bolts). Specimens with single bolt failed by shear-out fracture except for some specimens with bolt shear fracture and two-bolted connection showed shear-out fracture at test end. Curling, i.e., out of plane deformation in the direction of plate thickness occurred in single shear two-bolted connections and it led to ultimate strength reduction. Moreover, test strengths were compared with those by current design specifications (Korean Design Standard (KDS)/American Institute of Steel Construction(AISC), Eurocode 3(EC3), American Society of Civil Engineers(ASCE) and American Iron and Steel Institute(AISI)) and strength equations suggested by previous studies.