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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.
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.
양일승(Il Seung Yang),조중현(Joong Hyun Cho) 한국관광연구학회 2014 관광연구저널 Vol.28 No.11
The purpose of this study was to study and analyze the cases of rural theme parks in Gwangju and Jeonnam using rural reservoirs, which are the major waterfront spaces in rural regions, to derive their performances and limitations and to suggest the measures to form rural theme parks using rural reservoirs and to revitalize their operation. As a result of case studies and analysis, there were performances such as the increase in amenity resources and visitors and cooperative operation with nearby villages and farm households. On the other hand, there were limitations such as lack of characteristics and differentiation of parks, lack of experience and amusement facilities with programs, high ratio of transit or simple visitors, and difficulties securing the financial resources for maintenance. In order to form and revitalize the rural theme parks using rural reservoirs, therefore, it is necessary to introduce unique and differentiated themes and facilities, expand the introduction of experience and amusement facilities, seed substantial ways to attract private funds, revitalize the development and operation of park programs, secure the budget for constant operation of parks, and participate the spontaneous management of local community residents.