Simplified Model for Pre-Code RC Column exposed to Fire Followed by Earthquake

Ioanna Ioannou, Tiziana Rossetto, David Rush, Jose Melo

Research output: Contribution to journalArticlepeer-review


The behaviour of pre-code reinforced concrete (RC) columns in sequence of fire and earthquake is not well understood and can be critical in case of buildings which experienced fire and are either unrepaired or poorly repaired when exposed to an earthquake. This study proposes a framework on how to construct a simplified model to assess the post-fire cyclic behaviour of such columns. Emphasis is given to the development of simplified material models which can be used to describe the performance of the confined concrete, as its post-fire behaviour is not well studied. The model’s performance is validated against the experimental results of a square, non-seismically designed RC column. Three scenarios are considered. The reference scenario, where the column is exposed only to cyclic loading. In the other two, the column is firstly exposed to an ISO-834 time–temperature curves in a furnace of 30 min and 90 min duration and after it cooled down, it is exposed to cyclic loading. The results showed that simplified material models can be used to capture the post-fire cyclic behaviour of an RC column, built without seismic design. It was also found that the confined model adopted played an important role after the peak strength is reached.
Original languageEnglish
Article number8980
JournalScientific Reports
Issue number1
Early online date28 May 2022
Publication statusE-pub ahead of print - 28 May 2022


  • OpenSees; ABAQUS; concrete confinement model; ISO-834 time-temperature curves; NonlinearBeamColumn element
  • Temperature
  • Earthquakes
  • Fires


Dive into the research topics of 'Simplified Model for Pre-Code RC Column exposed to Fire Followed by Earthquake'. Together they form a unique fingerprint.

Cite this