• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.247-248
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• 2023

The unit curtain wall is an exterior finish currently used on the exterior walls of high-rise buildings. Although the structural impact is not significant due to the non-strength wall, in the case of the unit curtain wall to which the factory manufacturing method is applied, deformation of the profile may occur according to its own weight. Therefore, in this study, stability is evaluated through design standard calculation applied when finishing the outer wall according to the design shape of the unit curtain wall profile.

• 한국산학기술학회논문지
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• 제2권2호
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• pp.57-63
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• 2001

본 연구는 기존 조적조 주택의 주요 구조부에 컨테이너를 활용한 개발 방식 즉, 컨테이너 하우스의 계획, 설계, 시공 가능한 시스템 개발을 목적으로 하였다. 이를 위해, 스틸하우스의 구조 및 시공 방법 등을 분석하였으며 컨테이너 하우스의 외벽 구성 시스템에 대한 견본품 제작을 완성하였다. 이 컨테이너 하우스 견본품을 토대로 두 개의 컨테이너 하우스 케이스 스터디에 적용하였고, 기존 조적조 주택 공법에 비하여 공사비 절감과 공기단축에 있어 현격한 효과가 있음을 확인하였다. 컨테이너하우스의 제작기술 개발 성공을 통해 스틸하우스 시장의 틈새 공략으로 기업체의 기술개발 및 투자방향을 제공하였다는데 의의가 있다.

• 한국농촌건축학회논문집
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• 제23권4호
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• pp.63-71
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• 2021

The purpose of this study was to investigate whether the standard models for rural housing and wooden housing model have performance for hygrothermal and to propose a way of improvement relevant to hygrothermal performance for those models. All of the models to be analyzed were found to have some parts that were absent of stability in terms of performance for hygrothermal. In the process of analyzing the causes and proposing improvement measures, the following conclusions were derived. Fist, The exterior surface of the structure should be composed of a structure with good moisture permeability, and for the interior surface, a variable vapor retarder paper should be applied in consideration of the reverse condensation phenomenon in summer. Second, in terms of performance for hygrothermal, applications of external insulation plaster finish to the exterior wall or of ventilation method using a rafter vent on the roof should be avoided. Third, a rain screen method with a ventilation layer should be applied to the exterior wall, and a method of constructing ventilation layer separated from the insulation layer with a vapor retarder paper should be applied to the roof. Fourth, the application of insulation materials having capillary action, such as wood fiber insulation board or cellulose insulation board, contributes to more stable performance for hygrothermal.

• 대한건축학회논문집:구조계
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• 제35권12호
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• pp.149-156
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• 2019

Recently, skyscraper building and apartment fires, which were rapidly spread out from a low floor to a rooftop, have become a frequent occurrence in mass media. This fire problems have a fatal disadvantage that the exterior wall finish of the building emits toxic gas in case of fire by using dry bit method or organic insulating material. Therefore, in order to remedy these problems, many exterior wall finishing construction methods have been proposed, but the current trend is to use existing construction methods due to problems such as economy, weight, and durability. On the other hand, in countries such as Germany and Japan, ceramic sidings are used as exterior finishing material for buildings, which is environmentally friendly, excellent natural beauty, long life, easy maintenance and high-quality exterior materials. However, those ceramic sidings have still the problems such as manufacturing cost and weight problem because of boosting the sintering temperature up to 1,350℃ or more. Also, conventional CRC, MgO, FRP sidings which are composed of pulp, glass fiber and organic materials, have been reports of deformation due to ultraviolet rays, discoloration, corrosion and scattering, surface rupture, lifting and peeling. Therefore, in this study as an alternative to solve this problem, halosite nano kaolin produced in Sancheong in Korea and frit flux were used to satisfy the required properties as ceramic siding using low temperature sintering (below 1,000℃) and lightweight materials such as pearlite. This study aims to design the optimal formulation and process of materials and to study the characteristics of nano-coated ceramic siding material development and to present relevant basic data. The findings show that ceramic siding for nanocoated building materials is excellent as a natural ceramic siding building material. The fire resistance of natural minerals and nano particle refining technology satisfy the bending strength of 80kgf / cm2, the volume ratio of 2.0 and the absorption rate of less than 10.0%.

• KIEAE Journal
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• 제11권5호
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• pp.55-67
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• 2011

The purpose of this research is to find applicable design characteristics and methods of communal spaces in vertical urban multi-family housing. With this goal, several overseas' multi-family housing projects are selected and their communal spaces are identified. The design characteristics of the communal spaces are analyzed with a special focus on the territories such as an individual unit boundary, building interior and exterior boundary. In terms of the framework for analysis, territoriality, openness, and unique characteristics are reviewed. As a result, the communal spaces are created using various spatial composition methods such as addition, subtraction, connection, extension, accumulation, and isolation. The communal space programs are integrated in plans and sections throughout the buildings. Visual openness and connection with surrounding urban environments are articulated by void spaces, transparent and translucent building materials, green spaces, and applications of graphical images. Communal identities and aesthetics are emphasized by unique building forms and space arrangements. The uses of finish materials, colors, objects, and images add strong characters to the communal spaces. For a further research, it is necessary to combine a design method study with residents' behaviors and community interactions.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 봄 학술논문 발표대회
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• pp.133-134
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• 2022

This study proposed vision artificial intelligence-based automated supervision technology for external insulation and finishing system, and basic research was conducted for it. The automated supervision technology proposed in this study consists of the object detection model (YOLOv5) and the part that derives necessary information based on the object detection result and then determines whether the external insulation-related adhesion regulations are complied with. As a result of a test, the judgement accuracy of the proposed model showed about 70%. The results of this study are expected to contribute to securing the external insulation quality and further contributing to the realization of energy-saving eco-friendly buildings. As further research, it is necessary to develop a technology that can improve the accuracy of the object detection model by supplementing the number of data for model training and determine additional related regulations such as the adhesive area ratio.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 가을 학술논문 발표대회
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• pp.154-155
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• 2021

Appearance finish is important for amorphous buildings to maximize amorphousness, and GFRC, glass, and metal are mostly used as exterior materials for amorphous buildings currently applied. However, the existing exterior materials showed limitations in amorphous expression, texture, and color expression. In this study, a 3D stereoscopic panel mold was manufactured using the FDM method, one of the 3D printing technologies, and 3D stereoscopic panel production was reviewed using Ultra High Performance Concrete (UHPC), which has excellent physical and mechanical performance and expression. In order to overcome the limitations of unstructured expression, a UHPC 3D stereoscopic panel using the FDM method, one of the 3D printing technologies, was manufactured. Unlike steel molds, FRP molds, and EPS molds, the FDM method can be applied to various materials, and complex shapes are implemented. If it is used using recyclable materials as well as PLA filaments used in the FDM method, it will overcome the limitations of amorphous expression and activate the production of 3D stereoscopic panels that have secured eco-friendliness.

• 대한기계학회논문집
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• 제19권3호
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• pp.713-723
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• 1995

In intelligent machine tools, a computer based control system, which can adapt the machining parameters in an optimal fashion based on sensor measurements of the machining process, should be incorporated. In this paper, the technology for adaptively optimizing the cutting conditions to maximize the material removal rate in face milling operations is proposed using the exterior penalty function method combined with multilayered neural networks. Two neural networks are introduced ; one for estimating tool were length, the other for mapping input and output relations from experimental data. Then, the optimization of cutting conditions is adaptively implemented using tool were information and predicted process output. The results are demonstrated with respect to each level of machining such as rough, fine and finish cutting.

• 한국건설순환자원학회논문집
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• 제7권4호
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• pp.389-394
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• 2019

본 연구에서는 기능성 무기 단열 소재인 TiO₂와 무기성의 습식 처리 플라이애시를 사용하여 건축물의 열환경성을 향상할 수 있는 외장 마감재의 물리적 성능과 열환경성에 대한 평가를 수행하였다. 마감재의 성능 평가는 KS F 4715의 얇은 바름재의 기준과 열환경성은 별도의 단열 박스를 제작하여 외부 표면 온도와 내부 온도를 측정하였다. TiO₂를 혼입한 경우 10%이상에서는 물리적 성능이 저하되는 것으로 나타났으며, 무기성의 습식 처리 플라이애시는 10%까지 물리적 성능이 증가되는 것으로 나타났다. 열환경성 평가에서는 무기성의 습식 처리 플라이애시의 표면 온도 저감 효과는 낮았으나 TiO₂와 복합적으로 사용되는 경우, 표면 온도 저감 및 내부 온도 저감에 효과적인 것으로 나타났다. 결국, 열환경 제어를 위한 TiO₂와 무기성의 습식처리 플라이애시의 최적 배합은 각각 5%를 혼합 사용할 때 최적인 것으로 나타났다.

• 한국화재소방학회논문지
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• 제27권2호
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• pp.25-30
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• 2013

해운대 우신빌딩 화재는 고층건축물의 외장재 수직화재에 의해 4층에서 발생한 화재가 최상층인 38층까지 올라가서 펜트하우스까지 모두 전소시켰다. 이 화재를 계기로 초고층 건축물의 위험성이 크게 대두되었고, 이후 다양한 초고층 관련 법규들이 신설되었다. 본 연구에서는 화재 시뮬레이션용 CFD 프로그램 중 FDS를 사용하여 해운대 오피스텔 빌딩의 화재를 재현하였다. 화재 시뮬레이션은 상층부로의 화염 전파 시간 및 경로에 관하여 관련 기사와 화재 동영상을 통해 비교 조사하였다. 이 결과 최상층까지 확산하는 시간이 약 30분으로 실제 화재와 비슷한 결과가 나왔으며 확대되는 화재 성상도 유사함을 나타냈다. 그러나 최상부로 올라갈수록 실제 화재는 V자 형태를 넓게 보였지만 시뮬레이션 결과에서는 상부로 올라갈수록 수평으로 전파하는 범위가 작게 보였다. 이는 FDS가 격자 형태로 표현되고 얇은 외장재를 표현할 수 있는 한계와 바람 방향에 의한 불확실성 때문이라고 판단된다. 또한, 화재확산 영향요소를 평가하기 위해 무풍일 때와 쌍둥이 타워 사이의 외장재가 콘크리트일 때를 고려하여 시뮬레이션을 시행한 결과 실제 화재보다 수직화재가 크게 발생하는 않는 결론을 얻었다.