Abstract
In the UK, the design of steel portal frame buildings in fire is based on the Steel Construction Institute (SCI) design method, in which fire protection needs only be provided to the columns, provided that the column bases are designed to resist an overturning moment, M OTM , calculated in accordance with the Steel Construction Institute design method. In this paper, a non-linear elastic-plastic implicit dynamic finite-element model of a steel portal frame building in fire is described and used to assess the adequacy of the Steel Construction Institute design method. Both two-dimensional and three-dimensional models are used to analyse a building similar to the exemplar frame described in the Steel Construction Institute design guide. Using the two-dimensional model, a parametric study comprising 27 frames is conducted. It is shown that the value of the overturning moment, calculated in accordance with the Steel Construction Institute design method, may not be sufficient to prevent collapse of the frame before 890°C.
| Original language | English |
|---|---|
| Pages (from-to) | 197-216 |
| Number of pages | 20 |
| Journal | Proceedings of the Institution of Civil Engineers: Structures and Buildings |
| Volume | 166 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2013 |
| Externally published | Yes |
Keywords
- Buildings
- Dynamics
- Fire engineering
- Structures and design
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction