Evaluation of ultimate bending moment of circular concrete–filled double skin steel tubes using finite element analysis

  • Vu Quang Viet Faculty of Civil Engineering, Vietnam Maritime University, 484 Lach Tray road, Le Chan district, Hanoi, Vietnam
  • Hoang Ha Vietnam Acapel Architects Ltd. Company, Nguyen Huy Tuong street, Thanh Xuan district, Hanoi, Vietnam
  • Pham Thai Hoan Faculty of Building and Industrial Construction, National University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
DOI: https://doi.org/10.31814/stce.nuce2019-13(1)-03

Abstract

In this study, the ultimate bending moment of circular concrete-filled double skin steel tubes (CFDSTs) was investigated. A CFDSTs made of two concentric circular steel tubes with concrete infill and M16 shear connector system was fabricated. The four-point bending test of the 10 m long CFDST consisting of outer and inner steel tubes with 914.4 mm and 514.4 mm in diameter, respectively, was carried out and the ultimate bending moment of the CFDST was investigated. A finite element (FE) simulation of the CFDSTs subjected to bending was developed using the commercial software ABAQUS and the accuracy of the developed FE model was verified by comparing to the experimental result. The ultimate bending moment of CFDSTs was then evaluated with respect to different concrete infill compressive strengths and yield strengths of the steel tubes. The corresponding design ultimate bending moments of the CFDST with regard to the design codes AISC and EC4 were also computed. The results revealed that EC4 and AISC can accurately predict the ultimate moment capacities of the CFDST with shear connector.

Keywords: ultimate bending moment; concrete-filled double skin tube; shear connector system; finite element analysis.

Received 19 November 2018, Revised 04 January 2019, Accepted 04 January 2019

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Published
31-01-2019
How to Cite
Viet, V., Ha, H., & Hoan, P. (2019). Evaluation of ultimate bending moment of circular concrete–filled double skin steel tubes using finite element analysis. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 13(1), 21-32. https://doi.org/10.31814/stce.nuce2019-13(1)-03
Issue
Vol 13 No 1 (2019)
Section
Research Papers

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