Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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An Analysis of Factors Influencing Insulation Performance of Inorganic Autoclaved Lightweight Concrete Sandwich Wall Panels Using Shear Connectors

전단연결재를 적용한 무기계 경량기포콘크리트(ALC) 샌드위치 외벽 패널의 단열성능에 미치는 영향요인 분석

  • 강동화 (서울시립대 대학원 건축공학과) ;
  • 강동화 (서울시립대 건축학부) ;
  • 신동현 (서울시립대 대학원 건축공학과) ;
  • 김형준 (서울시립대 건축학부)
  • Received : 2017.08.22
  • Accepted : 2017.11.18
  • Published : 2018.01.30
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Abstract

The purpose of this study was to analyze factors influencing insulation performance of inorganic Autoclaved Lightweight Concrete(ALC) sandwich wall panels with the application of shear connectors. To analyze the effect of shear connectors on the thermal performance of sandwich wall panels, heat transfer analysis was conducted by using the three-dimensional heat transfer simulation software. Four types of shear connector such as Pin, Clip, Grid, and Truss were selected for insulation performance analysis. Thermal bridge coefficient was calculated by varying typical panel thickness and shear connector thickness and materials such as steel, aluminum, and stainless steel. The results showed that Grid and Truss type widely distributed along the section of sandwich wall panel had a great influence on the thermal bridge coefficient by changing the influence factors. Based on the results of thermal and structural performance analysis, effective heat transmission coefficient of the sandwich wall panel satisfying the passive house insulation criteria was calculated. As a result, it was found that heat transmission coefficient was increased from $0.132W/m^2{\cdot}K$ to $0.141{\sim}0.306W/m^2{\cdot}K$ depending on the shear connector types and materials. In the majority of cases, the passive house insulation criteria was not satisfied after using shear connectors. The results of this study were likely to vary according to how influence factors were set, but it is important to apply the methods that reduce the thermal bridge when there would be a possibility of greatly affecting the insulation performance.

Keywords

Acknowledgement

Supported by : 산업기술평가관리원(KEIT)

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