| Title |
An Analysis of Factors Influencing Insulation Performance of Inorganic Autoclaved Lightweight Concrete Sandwich Wall Panels Using Shear Connectors |
| Authors |
Kang, Dong Howa ; Kang, Dong Hwa ; Shin, Dong Hyeon ; Kim, Hyung Joon |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.1.79 |
| Keywords |
Sandwich Wall Panel ; Shear Connector ; Heat Transfer Analysis ; Insulation Performance ; Thermal Bridge |
| 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 0.132 W/m2·K to 0.141~0.306 W/m2·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. |