Stress concentration factor in concrete-filled steel tubular K-joints under balanced axial loading

I. A. Musa, F. R. Mashiri

Research output: Chapter in Book / Conference PaperConference Paperpeer-review

Abstract

![CDATA[Welded steel tubular K-joints are widely used in bridges. The tubular joint usually encounters the problem of stress concentration at theweld vicinity. Fluctuating loads due to traffic causes fatigue problemwhere small cracks initiate at the location of the maximum stress concentration. Concrete filling the tube reduces stress concentration and hence, increases fatigue strength of the joint. In the current study experimental investigation of stress concentration factor (SCF) in circular hollow section concrete-filled steel tubular (CFST) K-joints with gap under balanced axial loading has been conducted. The distribution of SCF around the welded brace-to-chord intersection on both the brace and chord has been investigated in one CFST K-joint specimen. The experimental SCF results have been compared with the predicted SCF in empty and CFST K-joints. A finite element model has been developed using ABAQUS. Modelling SCFs are comparable with the experimental SCF results. The results have shown that the concrete has a significant effect in reducing the SCF.]]
Original languageEnglish
Title of host publicationLife-Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision: Proceedings of the 6th International Symposium on Life-Cycle Civil Engineering (IALCCE 2018), 28-31 October 2018, Ghent, Belgium
PublisherCRC Press
Pages2875-2880
Number of pages6
ISBN (Print)9781138626331
Publication statusPublished - 2019
EventInternational Symposium on Life-Cycle Civil Engineering -
Duration: 28 Oct 2018 → …

Conference

ConferenceInternational Symposium on Life-Cycle Civil Engineering
Period28/10/18 → …

Keywords

  • axial loads
  • bridges
  • concrete
  • girders
  • joints
  • stress concentration

Fingerprint

Dive into the research topics of 'Stress concentration factor in concrete-filled steel tubular K-joints under balanced axial loading'. Together they form a unique fingerprint.

Cite this