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- 저자 : 임우영(Woo-Young Lim) (검색결과 77 건)
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임우영,유영찬,Lim, Woo-Young,You, Young-Chan 한국강구조학회 2017 韓國鋼構造學會 論文集 Vol.29 No.2
본 연구에서는 국내 소규모 철골조 건축물에서 실제 시공된 보-기둥 약축 접합부에 대한 현황조사를 바탕으로 시공성을 향상시킨 약축접합부 상세를 제안하였으며, 제안된 약축접합부에 대한 반복가력 실험을 통해 접합부 내진성능을 평가하였다. 실험변수는 보-기둥 접합부에 사용된 볼트의 개수이다. 실험결과, 본 연구에서 제안하고 있는 보-기둥 약축 접합부의 거동은 수평 스티프너에 연결되는 고력볼트의 개수의 의해 결정되는 것으로 나타났다. 접합부에 4개 이상의 볼트접합이 사용될 경우 현행 기준에서 요구하는 부분 강접합 요구조건을 만족시키는 것으로 나타났다. 모든 실험체는 플랜지 연결플레이트의 연단쪽 보 플랜지 볼트 구멍 주위에서 국부적인 지압파괴와 파단 등이 발생하였다. 하지만, 웨브 높이와 플랜지 폭이 작은 기둥을 사용할 경우, 접합부에 사용되는 고력볼트의 개수가 제한적으로 사용되어야 할 것으로 판단되므로 향후 이 부분에 대한 추가적인 연구가 필요하다. Cyclic loading tests for beam-to-column weak-axis connections were performed to investigate the seismic performance. In this study, the connections were developed to improve the constructability on the basis of investigation for existing small-size steel structures. The primary test parameter is the number of high-tension bolts which are used to connect steel beam and column using exterior and interior flange plates. Test results showed that the number of bolts had a significant effect on the cyclic behavior of beam-column weak-axis connections. From the analysis of test results, it is concluded that more than four bolts in the connections can satisfy the requirements of semi-rigid connection presented in current design codes. All of specimens showed the bearing failure around bolt holes and fracture at the beam flange. However, when the web height and the flange width is relatively small, the number of the bolts used in the connections might be limited. Thus, the additional research in this area is needed.
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L형 갈고리 앵커볼트를 사용한 약축방향 노출형 주각부의 내진성능 평가
임우영,유영찬,Lim, Woo-Young,You, Young-Chan 한국강구조학회 2017 韓國鋼構造學會 論文集 Vol.29 No.4
본 연구에서는 기존 소규모 철골조에서 나타나는 현장상세 노출형 주각부와 이를 보완한 상세를 가진 약축방향 주각부에 대한 반복 가력 실험을 통해 다양한 상세를 가진 약축방향 노출형 주각부의 내진성능을 평가하였다. 실험변수는 베이스 플레이트의 두께, 앵커볼트의 개수와 매립깊이, 그리고 리브 플레이트의 유무이다. 앵커볼트의 부착성능이 주각부 내진성능에 미치는 영향을 알아보기 위해 본 연구에서는 원형강봉과 나사산이 있는 L형 갈고리 앵커볼트를 사용하였다. 실험결과, 앵커볼트의 부착성능과 베이스 플레이트의 항복유무는 주각부의 에너지 소산능력에 영향을 끼치는 것으로 나타났다. 특히, 베이스 플레이트가 현행 기준에서 제시하고 있는 최소 두께를 만족하더라도 강재 기둥이 소성모멘트에 도달하기 전 베이스 플레이트가 항복할 경우, 주각부의 구조성능이 저하될 수 있는 소지가 있는 것으로 나타났다. 하지만, 현행 구조기준에 따라 접합부 성능을 조사한 결과, 제안된 약축방향 주각부 상세는 부분 강접합으로 가정할 수 있는 것으로 나타났다. 기존의 원형강봉에 비해 부착성능이 우수한 나사산이 있는 L형 갈고리 앵커볼트는 반강접 노출형 주각부에 사용가능할 것으로 판단된다. In this study, seismic performance was evaluated for the exposed column-base plate weak-axis connections of small size steel structures through cyclic loading tests. The primary test parameters are the thickness of base plate, the presence of rib plates, the number of anchor bolts and embedment length of anchor bolts. To investigate the effect of bond performance of anchor bolts on the seismic performance of column-base plate connections, L-shaped round bars and thread bars were used as the hooked anchor bolts in the test specimens. Test results showed that bond performance of anchor bolts and the thickness of base plate significantly affect the structural performance and energy dissipation capacity. In particular, it was found that even if the requirements for minimum thickness of the base plate that is satisfied, the base plate can yield before the capacity of steel column reaches the plastic moment resulting in decreasing the structural performance of the connections. However, the proposed details of the connections might be considered as the partially restrained, that is semi-rigid connections. Consequently, the L-shaped thread anchor bolts is applicable in the exposed column-base plate weak-axis connections of small-size steel structures.
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임우영(Lim Woo-young) 한국외국어대학교 외국문학연구소 2002 외국문학연구 Vol.- No.12
The mythic figures in 『Wandrers storm song』 cannot be identified on the basis of the old mythology. “Genius”, “Jupiter Pluvius”, “Bromius” and “Apollo” are used always after the intentions of the poet, where his aesthetic opinions are to be represented symbolically. Thus Goethe mixes the Greek mythology with the Christian “genesis”, in order to let the creative artist reach a God similarity. On the other side he represents Gods such as Bromius (Baccus) and Apollo than representatives of a contemporary artistry, which does not produce true art after Goethe's view. Goethe rejects Theokrit and Anankreon, and Jupiter Pluvius and Pindar are the genius (protection God) of the ingenious and creative artist and the ideal model, which the artists of the recent time are to follow. Jupiter Pluvius is a creator God, which rules over the large natural phenomena (thunderstorm, hail weather), the wanderer as origin of his artistic experiences “glow”. The old-Greek poet Pindar wrote the Ode “victory song”, in which the courage of a car steering wheel is praised. That is after Goethe a model of the artist. Goethe presents into 〈Wanderers storm song〉 a “lyric I”, which wants to achieve a goal both from the life and from the art. Goethe refers to the scene of the Pindars of car steering wheel as the best symbolic paragon for the poets of the more recent time, where a hero down-floats regardless of the danger of the mountains. In this condition could the lyric I (one of ingenious artists) and the genius unite. But the other side of the ‘Wanderer’ in the Epode of the 3. Triad, where the proud wanderer recognizes himself as ‘an ingenious artist’ and directly as a “Unbehauster”(homeless), is to be compared with the Ikarus myth. The wanderer, who believes to be raised by the godlike inspiration like that glowing and to a “divinity” like the car steering wheel in the Pindars Ode, longs suddenly for a small “hut”, where he can stay on earth. He envies the small “feuerigen”(mettlesome) returning farmer and tries to overcome the terrestrial luck blessedness of the farmer by highest artist consciousness raised from Pindar. After his “high” flight he feels absolutely necessary to return again to the reality. Because he recognizes, that his genius cannot always remain for him and give him the ingenious inspiration. Here the loud statement of the wanderer is related that he is an ingenious artist like the Gods and therefore he can exceed the terrestrial limitation “godlike”. As in 〈Prometheus〉 and 〈Ganymed〉 an ambivalence is also shown in Goethe’s Ode 〈Wandrers storm song〉, which mentioned that “ingeniously” a young artist must come into a conflict between the godlike feeling artistry and not always with the “divinity” agree becoming reality. The mythic figures in 『Wandrers storm song』 cannot be identified on the basis of the old mythology. “Genius”, “Jupiter Pluvius”, “Bromius” and “Apollo” are used always after the intentions of the poet, where his aesthetic opinions are to be represented symbolically. Thus Goethe mixes the Greek mythology with the Christian “genesis”, in order to let the creative artist reach a God similarity. On the other side he represents Gods such as Bromius (Baccus) and Apollo than representatives of a contemporary artistry, which does not produce true art after Goethe's view. Goethe rejects Theokrit and Anankreon, and Jupiter Pluvius and Pindar are the genius (protection God) of the ingenious and creative artist and the ideal model, which the artists of the recent time are to follow. Jupiter Pluvius is a creator God, which rules over the large natural phenomena (thunderstorm, hail weather), the wanderer as origin of his artistic experiences “glow”. The old-Greek poet Pindar wrote the Ode “victory song”, in which the courage of a car steering wheel is praised. That is after Goethe a model of the artist. Goethe presents into 〈Wanderers storm song〉 a “lyric I”, which wants to achieve a goal both from the life and from the art. Goethe refers to the scene of the Pindars of car steering wheel as the best symbolic paragon for the poets of the more recent time, where a hero down-floats regardless of the danger of the mountains. In this condition could the lyric I (one of ingenious artists) and the genius unite. But the other side of the ‘Wanderer’ in the Epode of the 3. Triad, where the proud wanderer recognizes himself as ‘an ingenious artist’ and directly as a “Unbehauster”(homeless), is to be compared with the Ikarus myth. The wanderer, who believes to be raised by the godlike inspiration like that glowing and to a “divinity” like the car steering wheel in the Pindars Ode, longs suddenly for a small “hut”, where he can stay on earth. He envies the small “feuerigen”(mettlesome) returning farmer and tries to overcome the terrestrial luck blessedness of the farmer by highest artist consciousness raised from Pindar. After his “high” flight he feels absolutely necessary to return again to the reality. Because he recognizes, that his genius cannot always remain for him and give him the ingenious inspiration. Here the loud statement of the wanderer is related that he is an ingenious artist like the Gods and therefore he can exceed the terrestrial limitation “godlike”. As in 〈Prometheus〉 and 〈Ganymed〉 an ambivalence is also shown in Goethe’s Ode 〈Wandrers storm song〉, which mentioned that “ingeniously” a young artist must come into a conflict between the godlike feeling artistry and not always with the “divinity” agree becoming reality.
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스테인리스 환봉으로 보강된 미륵사지 석탑 화강암 부재의 휨거동
임우영(Lim, Woo-Young),홍성걸(Hong, Sung-Gul) 대한건축학회 2015 大韓建築學會論文集 : 構造系 Vol.31 No.2
The purpose of this study was to investigate the flexural behavior of reinforced granite members in the Stone Pagoda of Mireuksa Temple Site. Flexural tests for six granite members reinforced by stainless steel bars were performed to determine the reinforcement method. Three stainless steel bars were inserted to drilled holes after injecting epoxy resin. Main parameter was the location of reinforcement. Material properties of the granite and stainless bars were obtained by uniaxial compression and tension tests, respectively. The critical stress intensity factors (KIc) and brittleness numbers (Np) were also determined by testing. Empirical equation for the modulus of rupture was proposed as function of compressive strength. As a result, the reinforced granites showed a good strength and ductility in compared to the granite with epoxy resin. Flexural moment strength was obtained from cross-sectional analysis and four types of flexural behavior depending on the location of reinforcement were proposed in this paper.
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