| Title |
Insulation Plan and Analysis for Curtain Wall Type PC(Precast Concrete) Outer Wall and Floor Joint of Rahmen Structure Apartment Built with PC for Off-Site Construction |
| Authors |
주나영(Joo, Na-Young) ; 송승영(Song, Seung-Yeong) |
| DOI |
https://doi.org/10.5659/JAIK.2022.38.10.241 |
| Keywords |
Precast Concrete; Curtain Wall; Rahmen Structure; Apartment; Insulation; Thermal Bridge |
| Abstract |
The aim of this study is to find an effective insulation method for the curtain wall type PC(precast concrete) outer wall and floor joint of a
rahmen structure apartment built with PC. The insulation performance of the existing case and alternatives in the recently constructed
apartment building was evaluated through three-dimensional steady-state heat transfer simulation. As a result, it was found that the existing
case needs to reduce thermal bridging effects caused by curtain wall corbels and fastening units and cover the upper fastening unit with
sufficient thickness. The first alternative, which moved the position where the curtain wall corbel was supported to the upper part of the
girder and sufficiently covered the upper fastening unit, showed that the effective U-factor decreased by 23.5% compared to the existing case.
The additional insulation between the curtain wall and the girder of the first alternative reduced the effective U-factor by 32.4%. If the
curtain wall corbel is removed, the effective U-factor is reduced by up to 36.3%, but structural analysis is required for field application. |