Re-evaluation of Force Transfer Mechanism of Reduced Beam Section (Dogbone) Seismic Steel Moment Connections

보 플랜지 절취형 (독본) 내진 철골모멘트 접합부의 응력전달 메카니즘 재평가

Employing classical beam theory for the design of RBS seismic steel moment connections was brought into question in this study, Both the experimental strain data and analytical results from the calibrated finite element analysis confirmed that the shear transfer mechanism in the RBS connection is completely different from that as predicted by classical beam theory Plausible explanations of a higher incidence of brittle fractures observed in the specimens with bolted-webs were presented. It was pointed out that the practice of providing web bolts uniformly along the beam depth is not consistent with the load path identified by both experimental and analytical results. More rational bolted-web details were proposed based on the identified principal load path,.