• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.11a
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• pp.59-60
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• 2013

본 연구는 고층 건축물의 외장재로 많이 사용되고 있는 커튼월에서의 화재확산을 방지하기 위한 방안으로 건축물의 기존 외장재와 설비들을 이용한 성능설계 적용 기법을 활용하기 위한 기초 연구로써 실험적 연구를 수행하였다. 이를 위해서가로 1.2 m, 세로(높이) 2.6 m 두 개의 유리가 붙어 있는 커튼월을 사용하였으며 한쪽의 유리에만 스프링클러를 설치하고, 커튼월 앞에 1m 지름의 헵탄의 화원을 사용하여 실험을 수행하였다. 스프링클러 설치 유무에 따라 커튼월의 유리의 파손으로 인한 화재 전파 방지에 효과가 있는 것을 확인하였다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.04a
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• pp.163-167
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• 2010

최근 건축물의 초고층화에 따른 커튼월 시공에 따라 유리의 비중이 증가하고 있다. 커튼월 구조는 바람, 지진 등에 취약하며, 화재 안전성에 있어서도 취약할 것이라 판단되므로, 국내외 건축용 유리 및 커튼월의 안전기준에 대한 조사를 실시하였다. 그 결과 국내의 유리 기준은 단열 및 내풍압 성능에만 집중되어있으며, 화재 및 지진, 안전성능에 대한 기준이 미비하며, 커튼월에 대한 안전대책은 전무한 실정이다. 따라서 외국의 사례와 같이 초고층에서 커튼월의 안전성능을 고려한 설계프로세스나 안전 기준의 세부화가 필요하다고 판단된다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.04a
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• pp.345-350
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• 2011

본 연구에서는 건축물의 초고층화와 대형화로 접목된 커튼월을 모델로 선정하여 알루미늄과 스틸 커튼월의 성능 비교를 위한 화재실험을 실시하였다. 화재실험은 $3m{\times}3m$ 규모의 알루미늄과 스틸 재질로 제작하여, 차염성, 차열성, 방열성, 변위, 커튼월 파괴를 측정하였다. 실험결과 알루미늄커튼월의 차염성은 12분, 차열성은 6분, 방열성은 26분을 기록하였고 스틸커튼월의 차염성은 10분, 차열성은 6분, 방열성은 14분을 기록하였다.

• Fire Science and Engineering
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• v.25 no.6
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• pp.104-111
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• 2011

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 steel-aluminum 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 steel-aluminum 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.

• Fire Science and Engineering
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• v.26 no.6
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• pp.31-37
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• 2012

In this study, the fire risk of the curtain wall structure was compared with a general structure among the double envelope structure using a fire simulation program. To this end, a fire-story building curtain wall was modeled as virtual using the PyroSim based on a fire simulation program (FDS). And then, the fires occurred in the model, divided by curtain wall non-applied model and applied model, in the same structure and place. To identify the fire characteristics, smoke behavior characteristics, viewing distance, and volume fractions of CO and $CO_2$ were comparative analyzed. As a result, it was identified that the curtain wall applied model quickly filled with smoke from the top floor to under the floor compared to the curtain wall non-applied model. From this study, the fire risk of curtain wall structure was evaluated in detail using the fire simulations.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.808-812
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• 2008

Recently, the buildings have been likely to shape Super Tall trend. Therefore, the exterior parts of the buildings come to be changed. Instead of early heavy wall structure, it is changed to light wall concept of curtain wall system. However, the curtain wall system causes lots of loads due to the external surrounding factors of building. In particular, due to the densely built-up condition in Korea, the generation of dew condensation is getting severer Since there has been no standardized process that reviews this generation of dew condensation, it is very urgent for us to prepare the reviewing process for the dew condensation for construction business managers. The purpose of this study is to assess dew condensation function of the curtain wall and provide the basic data for the provision of the future dew condensation review process by comparing and analyzing the range of generation of dew condensation as well as temperature distribution according to the change of relative humidity at the identical temperature by selecting the Unitized system and Stick system which are the representative types of curtain wall system.

• Journal of the Korea institute for structural maintenance and inspection
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• v.18 no.4
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• pp.138-146
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• 2014

Structural safety as well as variety and aesthetics of building facade are currently gathering more attention in building construction and stone curtain wall is widely used in exterior wall. However, two main problems are existed in curtain wall construction method. One is an uniformity of construction quality and the other is a repair work of stone panels. Also, the noise and vibration occurring in construction may be cause of civil complaint. Therefore, a new method is needed to overcome these problems. This paper presents a new stone curtain wall system using under cut anchor and secondary holes that was developed in this study. Additionally, structural performance evaluation was conducted to verify the constructability and structural safety for wind pressure and seismic load. Through the evaluation of this method, improved constructability and economic efficiency were verified.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.301-304
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• 2004

The curtain wall engineering of local high-rise buildings consists of many phases such as design, curtain wail design, manufacture, procurement, construction and facility management, each of which also involves many' actors such as architect, curtain wall consultants, manufacturers, contractors, and facility managers. Moreover, the method for controlling the C/W process of each participant is needed. Eliminating wastes and problems existed in the C/W process can be more effective. What is more, it is necessary to improve the efficiency of the current process and to strengthen the competence through application of SCM to the C/W life-cycle. In addition, it is important that a ]ot of information transfer smoothly and share through information system. Therefore, this study aimed to propose the scope of application and the improvement directions in applying Supply Chain Management concept.

• Journal of the Korea Institute of Building Construction
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• v.21 no.1
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• pp.41-49
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• 2021

This study was to solve the lift problem of the existing unit curtain wall type by using the vertical material mullion as a rail in curtain wall, which is recently used as an external finishing material for high-rise buildings. It has been shown that the application of the curtain wall mullion's rail can be quantified even at 20m/sec wind speed through the Mock-Up test. Based on the sites selected for comparison of construction methods, it was analyzed that the construction period could be shortened by 48 days, or about 20 percent. It was analyzed that the number of construction workers could be reduced by about 33 percent from the previous nine to six. Based on these results, assuming the installation of curtain wall units of 10,000㎡, it is judged that construction cost can be reduced by 80% or more.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.1
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• pp.6-12
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• 2018

Recently, The use of the curtain wall method is increasing in construction. The curtain wall construction is widely applied to the exterior wall of the building for shortening construction period and economical efficiency. However, the replacement of deterioration of the weather resistance and structural behavior of the sealing material connecting the curtain wall method and the glass frame is necessary for introduction of the stable curtain wall method and quality improvement in accordance with KS F 4910 standard. In this study, the elastic restoring force test was performed in the external environment. In this study, the deterioration of the sealant was evaluated for structural sealants. In Korea, studies on the variable displacement behavior of structural sealants are lacked. In this study, the reproduced results in laboratory conditions are compared with the deteriorating conditions exposed to the external environment, and they are reflected in the design of sealing materials in the future. According to the results of the study, it was confirmed that the existing structure sealant meets the quality standard of KS F 4910, but in the conditions performed in this study, adhesion failure of the specimen and cracking of the surface occurred. Especially, in the weather resistance test, it is necessary to evaluate the long-term durability performance of the structural sealant used in the curtain wall method by checking the insoluble state of all the test pieces. Therefore, in order to apply a conventional structural sealant to the site, it is necessary to introduce another durability performance evaluation.