| Title |
A Study on the Post-buckling Behaviour of Single-layer Domes exposed to Fire |
| Authors |
Lee, Sang-Jin ; Bae, Jungeun |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.8.139 |
| Keywords |
Single-layer Dome; Fire; High Temperature; Reduction Factor; Structural Instability; Post Buckling Path |
| Abstract |
The lightweight structures such as domes are particularly vulnerable when it has been subjected to high temperature induced by the fire. It is
therefore crucial to predict the possible instability path of structures exposed to the fire in structural design process. In this study, the
instabilities of single-layer domes is investigated by using finite element technologies with the consideration of high temperature. The material
properties of members under high temperature are considered by using the reduction factors which is provided in Eurocodes 3. Some damage
patterns are assumed with use of a structural unit which is symmetric in radial direction. For numerical evaluations, the geometrically
nonlinear truss element is implemented and the arch-length control method is employed to trace the post-buckling behaviour of domes. From
numerical results, it is found to be that a significant change of post-buckling behaviour is detected in dome structures when structural
members are exposed to the fire. |