• 한국화재소방학회논문지
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• 제25권6호
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• pp.104-111
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• 2011

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 비해 스틸-알루미늄 복합 프레임 커튼월의 차염성능은 15분, 복사열에 대한 성능은 13분 상향 평가되었다. 프레임의 붕괴는 스틸-알루미늄 복합 프레임의 경우 36분, 알루미늄 커튼월의 경우 13분이었으나, 차열성능은 내화유리의 온도에 의해 모두 6분으로 평가되었다.

• 한국태양에너지학회 논문집
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• 제33권3호
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• pp.51-57
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• 2013

Metal curtain wall systems are widely used in high-rise commercial and residential buildings. While aluminum is the most frequent used frame material, steel framing is also reemerging as a high-performance material in glazed curtain walls due to less thermal conductivity and design flexibility. The purpose of this study is to evaluate thermal performance of a steel frame curtain wall system by comparing with a aluminum frame curtain wall system. The thermal transmittance was measured according to KS 2278, and condensation resistance was calculated by the test results according to KS F 2295. The steel framing test specimen showed lower thermal transmittance and temperature descending factor compared to the aluminum framing test specimen.

• 국제초고층학회논문집
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• 제2권4호
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• pp.345-354
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• 2013

This paper presents an advanced engineering technique using finite element analysis to improve structural silicone glazing (SSG) design in high-performance curtain wall systems for building facade. High wind pressures often result in bulky SSG aluminum extrusion profile dimensions. Architectural desire for aesthetically slender curtain wall sight-lines and reduction in aluminum usage led to optimization of structural silicone bite geometry for improved stress distribution through use of finite element analysis of the hyperelastic silicone models. This advanced design technique compared to traditional SSG design highlights differences in stress distribution contours in the silicone sealant. Simplified structural engineering per the traditional SSG design method lacks accurate forecasting of material and stress optimization, as shown in the advanced analysis and design. Full scale physical specimens were tested to verify design capacity in addition to correlate physical test results with the theoretical simulation to provide confidence of the model. This design technique will introduce significant engineering advancement to the curtain wall industry and building facade.

• 건축역사연구
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• 제9권3호
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• pp.51-69
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• 2000

This study tries to analyze the development of architectural technologies appeared in several tall buildings and large spatial structures from 1955 to 1999 in Korea. We suppose that these buildings represent the development of technology in Korean modern architecture. By the detailed analysis of these buildings, we can arrive at a conclusion as such; During the years 1955-1999, there existed a great changement in the eighties. We can find this fact very well in the domain of structural system and curtain wall system. In large spatial structures, the structural-system of shell and steel truss dome was replaced by that of space frame, space truss and cable truss with membrane. In tall building, the structural system of rigid frame and shear wall was replaced by tubular system, core and outrigger system. Korean architects introduced the aluminum curtain wall in the sixties, but its low technological level caused many problems in reality. Therefore, precast concrete curtain wall appeared from seventies as the main method for an outer wall in tall building. With the augmentation of height after 1980, PC curtain wall was replaced by the aluminum curtain wall of unit type and structural glass wall system. These systems help to stress the transparency in a tall building.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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• pp.16-17
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• 2014

The curtain wall construction applied on high-rise building facades in Korea became generalized, but specialty of the CMr(Construction Manager) who needs to perform economical project management with specialty in the curtain wall construction is still lacking. Therefore, this study analyzed the structure design standard of the curtain wall, researched economical design alternatives. Based on the research results, if the ratio of dead load against wind load is less than 0.1256, LRFD will be more economical.

• 한국산업융합학회 논문집
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• 제14권3호
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• pp.87-93
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• 2011

When applying back panel(this material is aluminum complex panel coated with fire resistance substances) for curtain wall, solar radiation and heat storage of indoor air occurs to result in thermal warpage for back panel. The purpose of this analysis is to find out the cause of thermal warpage and come up with a solution to prevent changes of back panel and reduce elements that bring negative visual elements. Also to solve this problem analyse that case to reduce heat transfer by inserting additional material and cases to increase air space distance.

• 한국재료학회지
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• 제31권8호
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• pp.450-457
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• 2021

From measured thermal conductivity and modeling by simulation, this study suggests that U-factors are highly related to materials used between steel and polymer. The objective and prospective point of this study are to relate the relationship between the U-factor and the thermal conductivity of the materials used. For the characterization, EDX, SEM, a thermal conductive meter, and computer simulation utility are used to analyze the elemental, surface structural properties, and U-factor with a simulation of the used material between steel and polymer. This study set out to divide the curtain wall system that makes up the envelope into an aluminum frame section and entrance frame section and interpret their thermal performance with U-factors. Based on the U-factor thermal analysis results, the target curtain wall system is divided into fix and vent types. The glass is 24 mm double glazing (6 mm common glass +12 mm Argon +6 mm Low E). The same U-factor of 1.45 W/m²·K is applied. The interpretation results show that the U-factor and total U-value of the aluminum frame section are 1.449 and 2.343 W/m²·K, respectively. Meanwhile, those of the entrance frame section are 1.449 and 2.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.119-122
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• 2007

트루텍(TRUTEC) 빌딩은 서울 마포구 상암동 DMC(Digital Media City) 단지 내에 위치한 오피스 빌딩이다. 본 건물은 독일 설계사무소의 원설계를 바탕으로 국내 실시설계가 이루어졌으며 지하 5층 지상 12층 중규모 건물로서 그 외관을 독특한 3차원 입체 유닛을 활용한 커튼월로 마감하였다. 기존의 커튼월 공사에서 보여주었던 평면적인 모델을 탈피하고 알루미늄 바를 3차원 입체 가공함으로써 사각형 박스의 단순하게 보여질 지 모르는 입면을 독특하게 구현해해는 데 성공했다. 18개월의 공기를 준수하기 위해 커튼월 공사는 공사계약시점부터 주요 공정으로 분리되어 공정관리가 이루어졌으며, 지속적인 공정 업데이트 및 유기적인 이해당사자 회의를 통해 디자인 현안들을 해결해 나갔다. 최초 시도되는 형태의 입면과 알루미늄 바의 가공방법에서 발생할 수 있는 리스크를 최소화하기 위하여 단계별 Mock-Up을 실시하였으며, 피드백을 통해 예상되는 문제점들을 도출하고 분석하였다. 이를 통해 촉박한 공기의 준수와 품질 확보를 이룰 수 있었다.

• 국제초고층학회논문집
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• 제9권2호
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• pp.113-125
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• 2020

Beginning in the late 19th century, construction of skyscrapers spread throughout Chicago, New York City, and then the world as demand of space in buildings and increase of cost of land. With this change curtain wall systems have evolved to be more visually complex; these unique profiles of the skyscraper became powerful images and symbols of our cities. A curtain wall is defined as usually aluminum-framed wall containing in-fills of glass and metal panels. The framing is attached to the building structure and does not carry the floor or roof loads of the building.

• Structural Engineering and Mechanics
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• 제25권4호
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• pp.365-382
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• 2007

A pilot study has been conducted to guide the development of a finite element modeling formulation for the analysis of architectural glass curtain walls under in-plane lateral load simulating earthquake effects. This pilot study is one aspect of ongoing efforts to develop a general prediction model for glass cracking and glass fallout for architectural glass storefront and curtain wall systems during seismic loading. For this study, the ANSYS finite element analysis program was used to develop a model and obtain the stress distribution within an architectural glass panel after presumed seismic movements cause glass-to-frame contact. The analysis was limited to static loading of a dry-glazed glass curtain wall panel. A mock-up of the glass curtain wall considered in the analysis with strain gages mounted at select locations on the glass and the aluminum framing was subjected to static loading. A comparison is made between the finite element analysis predicted strain and the experimentally measured strain at each strain gage location.