Structural performance of concrete-filled double skin tubular beams with eccentric inner tubes

F. Wang, B. Young, L. Gardner

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Concrete-Filled Double Skin Tubular (CFDST) beams with stainless steel as the outer tube, carbon steel as the inner tube and sandwiched concrete infill between the tubes are presented. Previous studies on CFDST beams have revealed significant enhancements in flexural capacity due to the interaction between concrete and metal tubes. In this study, an innovative form of CFDST beam has been proposed, whereby the inner tube is positioned in the tensile zone of the sections. Hence, the beam sections can resist higher bending moment compared to those sections with the inner tube located at the centroid. A series of tests was performed on CFDST beams with an eccentric inner tube. Nine three-point major-axis bending tests were conducted. The full moment–deflection histories, moment capacities and failure modes of the CFDST beams are presented herein. The experimental results were used to evaluate the bending resistances predicted by the American and European Specifications.

Original languageEnglish
Title of host publicationTubular Structures XVI - Proceedings of the 16th International Symposium on Tubular Structures, ISTS 2017
EditorsAmin Heidarpour, Xiao-Ling Zhao
PublisherCRC Press/Balkema
Pages117-123
Number of pages7
ISBN (Print)9780815381341
DOIs
Publication statusPublished - 1 Jan 2018
Externally publishedYes
Event16th International Symposium on Tubular Structures, ISTS 2017 - Melbourne, Australia
Duration: 4 Dec 20176 Dec 2017

Publication series

NameTubular Structures XVI - Proceedings of the 16th International Symposium on Tubular Structures, ISTS 2017

Conference

Conference16th International Symposium on Tubular Structures, ISTS 2017
Country/TerritoryAustralia
CityMelbourne
Period4/12/176/12/17

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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