Effect of using steel corner tubes on the static compressive and cyclic behaviour of concrete-filled double-skin fabricated columns

M. Farahi, A. Heidarpour, X. L. Zhao, Riadh Al-Mahaidi

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The high strength of Concrete Filled Tubular (CFT) sections and Concrete-Filled Double-Skin Tubular (CFDST) sections distinguishes these sections from other conventional structural sections. In this study, an innovative fabrication strategy is implemented to enhance the performance of CFDSTs. Based on this strategy, four ultra-high strength steel tubes are welded to the corners of CFDST columns. Several specimens strengthened with this strategy are subjected to axial compressive and lateral cyclic loading. The static compressive experiments are performed on the short column specimens with one meter length while uniaxial and biaxial cyclic experiments are conducted on the selected three meter long specimens. Thus, through this experimental study, the efficiency of employing corner steel tubes in the improvement of the structural performance of CFDST sections is examined. It is proved that the employed fabrication strategy improves the resistance and the stability of the CFDSTs under the applied loading scenarios.

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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