Rate and temperature dependent relations for CFSTs subject to post-impact fire conditions

M. Mirmomeni, A. Heidarpour, X. L. Zhao, J. A. Packer

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Experimental research on the behaviour of conventional construction materials subject to extreme loading condition of post-impact-fire has indicated the effect of rate dependent loading history on the temperature performance of these materials. In order to analyse and design structures to withstand such combined loading, it is desirable to develop models that can reflect the mechanical properties of materials under initial impulsive loading and subsequent elevated temperature. In this study, a rate-pre-damage-temperature dependent empirical expression is proposed to predict the residual strength of partially damaged steel-concrete composite materials, in the form of concrete-filled steel tubes (CFST), at high temperatures up to 600°C. The developed model is calibrated and validated on the basis of actual experimental data published by the authors. The proposed expression proves to be capable of successfully reproducing material strengths by considering the extent of high strain rate induced pre-damage together with temperature exposure.
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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