Experimental behavior of flange-welded/web-bolted steel tubular connections under post-earthquake fire

Qianyi Song, A. Heidarpour, Xiao Ling Zhao, Lin-Hai Han

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


Extreme events such as earthquake and fire can cause severe damage to building structures. Besides the extreme events themselves, the coupling of multiple extremes such as earthquake followed by fire is more destructive. As fire is a common event appeared in or subsequently after earthquakes, it is necessary to capture the behavior of building structures subjected to post-earthquake fire (PEF) for buildings with high-level safety requirement. This study aims to investigate the behavior of steel connections subjected to the PEF scenario. In the experimental investigation, a group of flange-welded and web-bolted steel connections was tested in fire by using transient state method after subjected to various seismic loadings. It was found that the duration time of the connections with pre-damage decreased significantly under fire, which indicated the time available for evacuation, search and rescue become shorter than the original buildings without pre-damage. The findings are useful for engineering practice when PEF needs to be considered.
Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Advances in Steel-Concrete Composite Structures (ASCCS 2015)
EditorsLin-Hai Han, Wei Li, Dennis Lam
Place of PublicationBeijing China
PublisherTsinghua University Press
Pages1 - 8
Number of pages8
Publication statusPublished - 2015
EventASCCS International Conference on Steel-Concrete Composite and Hybrid Structures 2015 - Wenjin Hotel, Beijing, China
Duration: 3 Dec 20155 Dec 2015
Conference number: 11th


ConferenceASCCS International Conference on Steel-Concrete Composite and Hybrid Structures 2015
Abbreviated titleASCCS 2015
Internet address


  • Flange-welded/web-bolted steel connection
  • Cyclic loading
  • Pre-damage
  • ISO-834 fire curve
  • Post-earthquake fire
  • Hollow column

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