• 설비공학논문집
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• 제29권1호
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• pp.21-28
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• 2017

Curtain-wall systems have been widely applied to buildings because of their lightweight and constructability characteristics. However, as curtain-wall systems include many building materials, vapor barriers can become damaged and condensation can occur. Due to the material properties of stone curtain-walls, the external appearance and structure of a building could be damaged and the insulating performance of the curtain-wall could be worse. Natural ventilation using an air cavity in a curtain-wall is expected to be effective for the prevention of condensation in inner walls and for the reduction of building cooling energy use in the summer. The purpose of this experimental study is to analyze the influence of a ventilated cavity on the insulating performance of a curtain-wall and the ventilated cavity depth and ratio of top opening needed to prevent condensation in a curtain-wall.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.612-615
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• 2004

오늘날 뛰어난 시공성과 경제성으로 인해 수많은 건설 프로젝트에서 커튼월이 사용되고 있으며 특히 국내 초고층 프로젝트의 커튼월 공사는 전체 Life-cycle 상의 건축설계, 커튼월 선계, 제작, 조달, 시공, 유지관리의 모든 단계에서 다양한 주체들이 관여하는 공종으로 주요 관리 대상이 되었다. 기존의 관리방식은 Life-cycle의 각 단계별 관리에 초점을 맞춤으로써 비용 및 공기 증가, 생산성 저하, 풀질 퍼하 등의 문제가 빈번히 발생하고 있는 실정으로 이를 해결하기 위하여 공급사슬관리(Supply Chain Management)를 적용한 통합관리가 필요하다. 이에 본 연구는 커튼월 공사 전체 Life-cycle 관리에 대해 SCM 개넘을 적용하기 위해 커튼월의 방법 및 조달유형에 따라 분류되어진 Sick system, Semi-unit system, Unit-system, Panel system 커튼월의 프로세스를 분석하고 SCM 관전에서 각 프로세스의 조직, 정보, 생산 관점에서 차이점을 규명하고 각각에 대한 SCM의 적용방안을 제시하였다.

• 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.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.409-416
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• 2009

This paper presents a tool called Quality-Cost optimization system (QCOS), which integrates Multi-Objective Genetic Algorithm (MOGA) and Quality Function Deployment (QFD), for tradeoff between quality and cost of the unitized metal curtain-wall unit. A construction owner as the external customer pursues to maximize the quality of the curtain-wall unit. However, the contractor as the internal customer pursues to minimize the cost involved in designing, manufacturing and installing the curtain-wall unit. It is crucial for project manager to find the tradeoff point which satisfies the conflicting interests pursued by the both parties. The system would be beneficial to establish a quality plan satisfying the both parties. Survey questionnaires were administered to the construction owner who has an experience of curtain-wall project, the architects who are the independent assessor, and the contractors who were involved in curtain-wall design and installation. The Customer Requirements (CRs) and their importance weights, the relationship between CRs and Technical Attributes (TAs) consisting of a curtain-wall unit, and the cost ratios of each components consisting curtain-wall unit are obtained from the three groups mentioned previously. The data obtained from the surveys were used as the QFD input to compute the Owner Satisfaction (OS) and Contractor Satisfaction (CS). MOGA is applied to optimize resource allocation under limited budget when multi-objectives, OS and CS, are pursued at the same time. The deterministic multi-objective optimization method using MOGA and QFD is extended to stochastic model to better deal with the uncertainties of QFD input and the variability of QFD output. A case study demonstrates the system and verifies the system conformance.

• 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.214-215
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• 2014

Technologies on energy saving and materials used in curtain walls have progressed with increase of high-rise and large buildings. This study is explain fire resistance performance of the curtain walls. And focused on bond strength of light-weight inorganic ceramic board in high temperature for fire resistant curtain-wall system. From the result, curtain-wall system high fire resistant using the light-weight inorganic ceramic board.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.909-914
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• 2006

The purpose of this study is to analyze the thermal of DFS(double Facade System) and curtain wall in the heating period. The physical difference between curtain wall and double facade on thermal performance has been tested at the newly constructed laboratory, which can turn $360^{\circ}$ to confirm the characteristic of a facade with the various directions. This study divide on 'ventilated, airtight' and 'heated or unheated' conditions from the CASE 1, 2, 3, 4. The results showed thermal performance of double facade system which has been better than curtain wall. The heating energy of DFS reduced $8%{\sim}10%$ of energy consumption. comparable to SFS in experemted results. In view of the researching results so far achieved, the research came to a conclusion, that the curtain wall can save the energy in the heating period than a curtain wall.

• 한국건축시공학회지
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• 제4권3호
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• pp.125-131
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• 2004

Nowadays, it seems we are in the high time of construction design because development of construction technology widen the option of construction exterior closing materials and deepen the high-tech construction method with all various materials. When we see the flow of construction market, the mainstream is the high-rise intelligent building, which makes the best use of the small midtown area efficently. Therefore, Alum curtain wall is becoming the main material of exterior construction, the concept of which is changing from just a simple window frame to an outer wall which has comprehensive function and capability. As we think of the importance of Curtain wall as a comprehensive outer wall, We should do thorough technical examination and verification at the stage of construction design and plan of carrying out construction.

• 한국건설관리학회논문집
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• 제7권5호
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• pp.128-137
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• 2006

국내 건설 공종 중 커튼월 공사는 투자비용 측면에서 전체공사비에서 차지하는 비율이 약 $10{\sim}15%$로서 타 공종에 비하여 상대적으로 높고, 주공정(Critical Path)상에 위치하는 주요 관리대상 공종이며, 건축설계, 커튼월 설계, 제작, 조달, 시공, 유지관리 등 전체 라이프사이클의 각 단계별로 설계업체, 커튼월 제조업체, 시공업체, 유지보수 업체 등 전 공정에 약 30여개 업체가 관여하는 복합공종으로 이 과정에 있어 각 주체간의 업무 프로세스를 효과적으로 관리하기 위한 방안이 절실히 요구되고 있다. 그러나 기존의 관리방식은 각 단계별 관리에 초점을 맞춤으로서 프로젝트의 프로세스 상에서 발생하는 의사소통의 문제로 인한 오류, 잘못된 정보로 인한 재작업, 비효율적 인 정보관리로 인한 작업 중복, 누락 등 결과적으로 비용 및 공기의 증가 생산성 하락, 품질 하락 등의 문제가 빈번하게 발생하고 있는 실정이다. 본 연구는 커튼월 설계 생산 시공 유지관리 등의 전체 라이프사이클 프로세스 현황 파악 후 가치흐름맵핑 기법을 활용하여 As-Is 모델 도출, 이를 바탕으로 설계 단계에서의 설계 프로세스 현황 파악을 통한 설계 프로세스 As-Is 모델 도출, 설계 프로세스에서의 문제점 분석을 통한 설계 프로세스 개선 사항 분석 및 제시, 이를 토대로 한 설계 프로세스 To-Be 모델 개발 및 제시 등을 통하여 현업에서의 무다(waste, 낭비) 제거를 목표로 실무적 관점에서 시도하였다. 본 연구에서는 커튼월 공사의 전체 프로세스 중개선 효과가 가장 큰 것으로 파악된 커튼월 공사의 설계 프로세스를 대상으로 하였지만 동일한 방법론 및 절차는 커튼월 공사에서의 조달, 시공, 유지관리 프로세스에 적용될 수 있으며, 향후 다양한 건설 환경에서 다른 공종의 공사 프로세스의 현황 분석 및 개선을 위해서 활용될 수 있을 것으로 기대된다.

• 한국태양에너지학회 논문집
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• 제31권3호
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• pp.95-100
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• 2011

Currently, office buildings in Korea tend to adopt as their outer wall the curtain wall structure which can be easily constructed and has beautiful external appearance as well. However, the problem is that the curtain wall structure does not have a uniform composition unlike the wall of existing reinforced concrete structures and has a frame made of metal with high heat conduction. Therefore, it is expected that the structure will be highly influenced by the thermal bridge. Thereupon, this study analyzes how to set up the composition of the wall system and heat transmission rate in consideration of the thermal characteristics of the curtain wall structure and applies it in practice by simulation in order to propose a guideline for the energy simulation method of the curtain wall structure and analyze its differences from existing simulation methods.