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연직하중 시 드라이빙핀전용 전단연결재를 이용한 합성보의 내력
양일승,Yang, Il-Seung 대한건축학회 2011 대한건축학회논문집 Vol.27 No.9
Power actuated fasteners in sort of mechanical methods have appeared to be an alternative to metallurgical methods in the connection of H-beam and shear connector. Power actuated fasteners can be driven by power actuated tools or by pneumatically driven tools. This mechanical connection method has many advantages over metallurgical connection methods. First of all, a power supply is unnecessary and there are no concerns about an electrical accident. However, the handling of the mechanical connection method takes severs caution. Since the sound at the time of installation is loud, discretion is needed in a quiet place. Four specimens were tested so as to compare the structural behavior of the proposed composite beams with that of the classical composite beam in condition of vertical load. In the results, the proposed composite beam proposed in this paper, having shear connector using driving pins, showed sufficient plastic ductility and strength. And, yielding and maximum strength specimens in suggested composite beams using suggested shear connectors are 1.05~1.06 times than those of CB-SB specimen, which is composite beams using stud bolts.
드라이빙핀전용 전단연결재를 이용한 합성보의 탄소성 거동
양일승,오영호,이만재,Yang, Il-Seung,Oh, Young-Ho,Lee, Man-Jae 한국강구조학회 2012 韓國鋼構造學會 論文集 Vol.24 No.1
합성보는 철골보와 콘크리트슬래브를 스터드볼트로 일체화한 구조이며, 일반적으로 용접을 이용한 스터드볼트(Stud Bolts)가 연결재로 많이 사용된다. 그러나, 스터드볼트는 감전사고와 같은 전기재해나 용접불량 등 문제점을 가지고 있다. 따라서, 드라이빙핀을 이용한 기계적 접합이 대안으로 대두되고 있다. 본 연구는 드라이빙핀 전용 제안형 전단연결재를 이용한 합성보의 횡하중(지진하중이나 풍하중)시 구조적 성능을 평가하고자 한다. 기존형 합성보과 제안형 합성보는 안정된 탄소성 거동을 나타내었으며 기둥주변에서 콘크리트 압괴로 내력이 저하되었다. 따라서, 제안형 합성보는 기존형 합성보를 대체할 수 있을 것으로 판단된다. The adoption of a composite beam system is regarded as a simple but effective solution because it improves the overall stiffness, strength and stability of the structure by welding shear studs. However, welding shear studs poses problems including electric shock and weld defects. Mechanical methods have emerged as an alternative to metallurgical methods for connecting the H-beam and shear connector. Four specimens were tested in order to compare the structural behavior of the proposed composite beams with that of the classical composite beam given the condition of horizontal loading. With the original composite beam (FCB-SB specimen) using stud bolts, hysteresis loops are stable, but its strength decreased with the crashing of the concrete slab around the column. The suggested composite beams using shear connectors also yielded stable hysteresis loops. Consequently, use of the suggested composite beams instead of the original composite beam are recommended.
구조용집성재보와 콘크리트슬래브로 구성된 합성보의 휨성능
양일승(Yang Il-Seung),김순철(Kim Soon-Chul),박근홍(Park Guen-Hong) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.5
The objective of this investigation was to find out the feasibility of using composite beams consisting structural laminated timber beam and concrete slab in residental and commercial building. It is evident that the key elements in the composite beam are the shear connectors. The selection of these connectors was based on their shear capacity. The experimental study carried out in this research investigated the flexural behavior of composite beams under repeated loading. Also, the push out tests performed to evaluate shear performance of shear connectors, that is, bolt, lag screw, and nails. The penetration depths(4d, 6d, and 9d), where d is the diameter of shear connectors. There is no significant difference between the strength of the shear connectors driven into the timber joists 6times their diameter and 9 times their diameter. Hence, it is concluded that the required depth to obtain a sufficient strength for the shear connectors is 6 times its diameter. And, the experimental studies of composite beams showed that the ultimated load capacity of the proposed composite beam(LS-S10 specimen) is 1.29 times as high as the noncomposite one. Finally, it can be concluded that LS-S10 specimen consisting structural laminated timber beam and concrete slab can be significantly improved by providing appropriate shear connectors.
드라이빙핀이 노치를 갖는 강재의 인장특성에 미치는 영향
양일승(Yang IL-Seung),김순철(Kim Soon-Chul),김용빈(Kim Young-Bin),황성철(Hwang Sung-Chul),남상철(Nam Sang-Chul),양성준(Yang Sung-Jun),안현진(An Hyun-Jin) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Power actuated fasteners in sort of mechanical methods have appeared to be an alternative to metallurgical methods in the connection of a structural steel member and a thin steel plate. Power actuated fasteners can be driven by power actuated tools or by pneumatically driven tools. Tensile tests was conducted to investigate the effect of this mechanical method on the structural steel member. The main parameters are steel plate thickness, notch thickness, steel type, and damage types, that is, non-damage, drilled hole, and driving pin. This research supplies the fundamental data to the design criterion of this mechanical method by clarifying the influence of the mechanical method on the tensile property of the structural steel member. In a results, the strength and stiffness specimens using driving pin was raised but decreased deformation capacities and elongation.
내진 건축구조용 냉간성형 각형강관의 휨성능에 관한 실험적 연구
양일승(Yang, Il-Seung),정진안(Chung, Jin-An),이세정(Lee, Sae-Jung),정경수(Chung, Kyung-Soo) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.6
The use of SN steel in the building structure improved the reliability of the building. As a preceding study, the material properties of SPAR295 square pipes manufactured using SN400B plates were evaluated. The yield and ultimate strengths at the edges of SPAR295 square pipes did not satisfy the design codes based on the values at the sides. The bending tests of cold rolled steel square pipes for aseismatic building structures are performed. The main results show that: 1) the ultimate bending strength is much great, and the energy dissipation capacity is very well, which can make to consume great energy in earthquake. This SPAR295 can meet the need of seismic design very well. 2) The specimens are showed long yield platform after yielding, great cumulative energy-dissipating capacity and well ductility. 3) The fracture of specimens are caused by the local buckling and fracture of welding vicinity.
양일승(Yang Il-Seung),西山功(Nishiyama Isao),김순철(Kim Soon-Chul) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.5
In the occasion of the 2001 Geiyo earthquake, drop of ceiling was observed in long span buildings such as gymnasiums. Until Geiyo earthquake, there was no injured person reported though the various damage of the ceiling drop in the gymnasium was often reported. Therefore, a countermeasure about the danger to the life due to the ceiling drop wasn't described. However, The user of the facilities suffered injuries in the Geiyo earthquake. So, dynamic vibration tests was performed for conventional ceiling (ceiling 1 and ceiling 2) and the system ceiling (ceiling 3) to investigate vibration nature in the earthquake. And the simplified method for calculating natural period of ceiling was suggested. These results confirmed the fact that the simplified method could accurately and reliably predict the natural period of ceilings. By using the proposed simplified method a ceiling could be safely designed without resonance with the buliding.