Zhang, JH;
Shao, YB;
Hassanein, MF;
Cashell, KA;
Hadzima-Nyarko, M;
(2024)
Behaviour of cold-formed concrete-filled dual steel stiffened tubular short columns.
Journal of Constructional Steel Research
, 213
, Article 108381. 10.1016/j.jcsr.2023.108381.
(In press).
Preview |
Text
1-s2.0-S0143974X23006089-main.pdf - Published Version Download (9MB) | Preview |
Abstract
This paper presents an experimental and numerical investigation into the behaviour of cold-formed concrete-filled dual steel-stiffened tubular (CFDSST) short columns under axial compressive load. This new composite column is fabricated from four cold-formed lipped angles to make the outer steel tube and a concentrically-placed steel tube located inside with concrete filled inside both the inner and outer tubes. The lips in the outer steel section behave as longitudinal stiffeners. To investigate the axial compression behaviour of these columns, fourteen CFDSSTs were designed and fabricated as well as two concrete-filled stiffened steel tubular (CFSST) columns and two concrete-filled double steel stiffened tubular (D-CFSST) columns for comparison. The columns failed due to local buckling of the outer steel tubes. The columns were modelled using finite element analysis and the accuracy and reliability of the numerical data was determined by comparing the numerical and experimental results. The validated model was employed to conduct a parametric analysis to investigate the behaviour of CFDSST columns with different variables and properties. The results show that the ultimate strength of CFDSST columns is most significantly influenced by the presence and strength of the sandwiched concrete between the two steel sections. The paper also presents an analysis of the accuracy and reliability of different international codified methods for predicting the load-carrying capacity of CFDSSTs.
| Type: | Article |
|---|---|
| Title: | Behaviour of cold-formed concrete-filled dual steel stiffened tubular short columns |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jcsr.2023.108381 |
| Publisher version: | http://dx.doi.org/10.1016/j.jcsr.2023.108381 |
| Language: | English |
| Additional information: | © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Concrete-filled dual steel stiffened tube, axial compression Experiment analysis Finite element, design resistance |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10184806 |
Archive Staff Only
 |
View Item |
