Post-fire behaviour of cold-formed ultra-high strength steel tubular stub columns

F. Azhari, A. Heidarpour, X. L. Zhao

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This paper investigates the post-fire compressive behavior of thin-walled cold-formed Ultra-High Strength Steel (UHSS) tubular stub columns. The nominal 0.2% proof strength of the UHSS used in this study at room temperature is 1200 MPa. UHSS stub columns with length to diameter ratio (L/D) of 3 are axially compressed after being cooled from different fire temperatures to room temperature. The measured temperatures across the column height during heat-up and cooling phases, the stress-strain curves of the tested columns along with those obtained from the tensile coupon tests, residual strength values, slenderness values, and energy absorption of the tested specimens are all discussed for different fire temperatures.
Original languageEnglish
Title of host publicationTubular Structures XVI
Subtitle of host publicationProceedings of the 16th International Symposium for Tubular Structures
EditorsAmin Heidarpour, Xiao-Ling Zhao
Place of PublicationLondon UK
PublisherCRC Press
Number of pages6
ISBN (Electronic)9781351210843
ISBN (Print)9780815381341
Publication statusPublished - 2017
EventInternational Symposium on Tubular Structures 2017 - Novotel Hotel, Melbourne, Australia
Duration: 4 Dec 20176 Dec 2017
Conference number: 16th


ConferenceInternational Symposium on Tubular Structures 2017
Abbreviated titleISTS 2017
Internet address

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