Abstract
By automatically inputting the temperature data, adapting the steel and concrete constitute relationships which vary with the temperature and including the effects of creep, a non-linear FE program is used for calculating the time-thermal stress historical curves. The behaviour of RC columns in fire is investigated and the effects of different parameters such as size, concrete cover, arrangement of reinforcing steel bars on the fire resistances of RC columns are analysed. It is concluded that the collapse of a column in fire is a sudden buckling caused by the combination of compression stress, the reduction in material strength due to high temperature and the eccentricity due to nonuniform temperature distribution. The results are in good agreement with those from Eurocode.
| Original language | English |
|---|---|
| Pages (from-to) | 289-293 |
| Number of pages | 5 |
| Journal | Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology |
| Volume | 34 |
| Issue number | 3 |
| State | Published - Jun 2002 |
| Externally published | Yes |
Keywords
- Compression member
- Concrete
- Fire resistance
- Nonlinear
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