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.
Original language | English |
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Pages (from-to) | 22-60 |
Number of pages | 39 |
Journal | International Journal of Lifecycle Performance Engineering |
Volume | 2 |
Issue number | 45323 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- tubular steel structures
- fatigue
- stress concentration
- joints