| Title |
A Study on Direct Fixation System for the Prevention of Metal Roof Peeling |
| Authors |
임영석(Young-Seok Lim) ; 이원호(Wan-Ho Yi) |
| DOI |
https://doi.org/10.5659/JAIK.2021.37.5.173 |
| Keywords |
Direct fixation system; FEM Analysis; Metal roof; Metal connecter; negative pressure; Upward force; z-bar system; ZIP method |
| Abstract |
Domestic roof product manufacture design without structural design verification test has given rise to serious damage and failure of metal
roofs. The existing conventional indirect fixation roof system cause excessive stress concentration and deformation in z-bar flange to which upper and
lower plate is screwed. This improved direct fixation roof system uses the penetration stud without load transfer medium, so that it has little stress
concentration and deformation. In this study, It is proposed that direct fixation system of roof system is more structurally safe and excellent
than z-bar system. To prove this, Elements of two roof systems are classified by location and function and then load transfer mechanisms of
key elements are investigated. Lastly two roof systems are verified comparison through plastic analysis. |