Title: Fatigue behaviour of concrete-filled steel tubular joints - a review

Authors: Idris A. Musa; Fidelis R. Mashiri; Xinqun Zhu

Addresses: School of Computing, Engineering and Mathematics, Western Sydney University, Sydney, NSW 2751, Australia ' School of Computing, Engineering and Mathematics, Western Sydney University, Sydney, NSW 2751, Australia ' School of Computing, Engineering and Mathematics, Western Sydney University, Sydney, NSW 2751, Australia

Abstract: High stress concentration at weld vicinity in welded steel tubular joints has led researchers to try finding an effective method to reduce these stresses. Since the beginning of the last decade, concrete filling of the steel tubes has been effectively used to reduce stresses at the tubular joints. This paper summarises research on stress concentration factors and fatigue behaviour conducted on concrete-filled steel tubular T-, Y-, K-, KT-, N-, and X-joints. Based on available experimental results, nominal stress range and hot spot stress range design S-N curves have been proposed for concrete-filled steel tubular joints. These curves are compared with that of the tubular joints without concrete filling. Research gaps have also been highlighted and it has been found that the current research is insufficient to reasonably predict fatigue behaviour of concrete filled tubular joints.

Keywords: hot spot stress; nominal stress range; fatigue behaviour; stress concentration factors; SCF; concrete filled tubular joints; S-N curve; steel tubular joints; welded tubular joints; concrete filling; steel tubes; weld vicinity; welds.

DOI: 10.1504/IJLCPE.2016.082711

International Journal of Lifecycle Performance Engineering, 2016 Vol.2 No.1/2, pp.22 - 60

Received: 14 Mar 2016
Accepted: 11 Sep 2016
Published online: 08 Mar 2017 *

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