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스틸-알루미늄 복합 프레임을 갖는 커튼월의 내화성능에 관한 실험적 연구
이재승,임현창,조봉호,김흥열 한국화재소방학회 2011 한국화재소방학회논문지 Vol.25 No.6
Aluminum has been widely used as frame materials in the curtain walls. Recently, use of steel as a curtain wall frame is being considered due to its higher strength and thermal resistance than aluminum. In this study, fire tests on the basis of EN 13830 were performed with aluminum and steelaluminum hybrid curtain walls. From the tests, fire resistance integrity, thermal insulation, and radiation properties were evaluated for both systems and compared. According to the test results, the steelaluminum hybrid curtain wall showed better fire-performance than the typical aluminum curtain wall for the fire resistance integrity and radiation properties. Although, the fire resistance performance for the insulation property was 6 min for both the two frames, the collapses were occurred at 36 min for the steel-aluminum hybrid curtain wall and at 13 min for the aluminum hybrid curtain wall. 현재까지 알루미늄은 커튼월의 프레임 재료로서 광범위하게 사용되어 왔다. 최근에 건축물의 초고층화와 더불어 커튼월의 프레임 재료로서 알루미늄에 비해 강도와 열 저항능력이 큰 스틸에 대한 관심이 증가하고 있다. 본 연구에서는 알루미늄 커튼월과 스틸-알루미늄 복합 커튼월에 대한 내화성능을 EN 13830에 근거하여 차염성, 차열성 및 복사열 차단성능에 대하여 평가하였다. 실험결과, 알루미늄 커튼월에 비해스틸-알루미늄 복합 프레임 커튼월의 차염성능은 15분, 복사열에 대한 성능은 13분 상향 평가되었다. 프레임의 붕괴는 스틸-알루미늄 복합 프레임의 경우 36분, 알루미늄 커튼월의 경우 13분이었으나, 차열성능은내화유리의 온도에 의해 모두 6분으로 평가되었다.
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쏘일네일과 강재스트립으로 보강된 복합보강토옹벽 시스템의 사례연구
천병식,김홍택,조현수,도종남 한국지반공학회 2008 한국지반공학회논문집 Vol.24 No.12
The reinforced earth wall, which is able to improve the strength of soil highly, is required in case of supporting high surcharge load such as high speed rail way, high embankment road, and massive reinforced earth wall in a mountainous area. And also, it is continuously required that the method is able to minimize the amount of excavated soil on account of environmental issue, boundary of land, etc., on excavation site. However, because the required length of reinforcement should be 60~80% of the height of reinforced earth wall for general reinforced earth wall, in fact the reinforced earth wall is hardly applied on the site of cut slope. In this paper we studied the design and construction cases of hybrid reinforcement retaining wall system combined with steel strips and soil nails, connecting the reinforced earth wall reinforcements to the slope stability reinforcements (soil nails) to ensure sufficient resistance by means of reducing the length of reinforcements of reinforced earth wall. And the feasibility of hybrid reinforcement retaining wall system, suggested by real data measured on site, is also discussed.
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커플링 보의 접합방식에 따른 복합 벽체 시스템에 관한 연구
윤현도 ( Yun Hyun-do ),박완신 ( Park Wan-shin ),한병찬 ( Han Byung-chan ),윤여진 ( Yun Yeo-jin ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 논문집 Vol.7 No.4
철근콘크리트 코어 벽체와 외부 철골골조로 구성된 복합벽체시스템은 중앙 코아 전단벽 주변의 오픈공간을 갖는다. 이와 같은 복합 벽체시스템은 연결된 벽체가 대부분의 횡하중에 저항하고 벽체저면과 커플링 보에서 대부분의 에너지를 소산할 수 있는 설계기법을 개발하는 것이 필요하다. 본 연구논문은 커플링 보의 접합방식 및 층규모를 주변수로 수직하중 및 풍하중과 지진하중을 받는 복합 벽체시스템에 대하여 전단력, 전도모멘트, 최대 횡변위, 층간변위비 및 동적특성을 규명하였다. The Hybrid Wall System(HWS) building composed of center core reinforced concrete walls and exterior steel frame has open space around the center core walls. It is necessary to develop design methodologies for the HWS building that the coupled shear walls withstand the most of lateral load and expect the most energy dissipation at the coupling beams and at wall foots. Major factors considered in this paper are connection type of coupling beams and scale of story. The studies of the system are investigated in terms of shear force, overturning moment, maximum lateral displacement, story drift ratio, and dynamical characteristics under the action of vertical and lateral forces such as wind and seismic loads.
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Analytical model for hybrid RC frame-steel wall systems
Mo, Y.L.,Perng, S.F. Techno-Press 2003 Structural Engineering and Mechanics, An Int'l Jou Vol.16 No.2
Reinforced concrete buildings with shearwalls are very efficient to resist earthquake disturbances. In general, reinforced concrete frames are governed by flexure and shearwalls are governed by shear. If a structure included both frames and shearwalls, it is generally governed by shearwalls. However, the ductility of ordinary reinforced concrete is very limited. To improve the ductility, a series of tests on framed shearwalls made of corrugated steel was performed previously and the experimental results were compared with ordinary reinforced concrete frames and shearwalls. It was found that ductility of framed shearwalls could be greatly improved if the thickness of the corrugated steel wall is appropriate to the surrounding reinforced concrete frame. In this paper, an analytical model is developed to predict the horizontal load-displacement relationship of hybrid reinforced concrete frame-steel wall systems according to the analogy of truss models. This analytical model is based on equilibrium and compatibility conditions as well as constitutive laws of corrugated steel. The analytical predictions are compared with the results of tests reported in the previous paper. It is found that proposed analytical model can predict the test results with acceptable accuracy.
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김진하(Jin-Ha Kim),신승호(Seung-Ho Shin),홍사영(Sa-Young Hong) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
The applicability of berthing of ship on floating hybrid quay wall(HQW) is studied in this paper. A higher order boundary element method(HOBEM) combined with generalized mode approach is applied to analysis of motion of HQW and container ship. A series of model tests in regular waves were carried out at shallow basin, KORDI. The simulated motion responses also have been compared with the test results, and the applicability of HQW with berthing of ship is discussed.
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