RESEARCH ARTICLE


Experimental and Numerical Study on Bar-Reinforced Concrete Filled Steel Tubular Columns Under Axial Compression



Jinsheng Han*, Shuping Cong
School of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266510, China.


Article Metrics

CrossRef Citations:
6
Total Statistics:

Full-Text HTML Views: 139
Abstract HTML Views: 336
PDF Downloads: 191
Total Views/Downloads: 666
Unique Statistics:

Full-Text HTML Views: 106
Abstract HTML Views: 257
PDF Downloads: 170
Total Views/Downloads: 533



Creative Commons License
© 2011 Han and Cong; .

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266510, China; Tel: +86-0532-86055792; Fax: +86-0532-87199217; E-mail: hjsheng2008@163.com


Abstract

The behaviors of bar-reinforced concrete filled steel tubular columns subjected to axial load were studied. One plain concrete filled steel tubular column and three bar-reinforced concrete filled steel tubular columns were tested. The deformation of specimens and the strain of steel tubes were measured. Based on experimental researches, a simple numerical analysis method was presented to simulate the full load-deformation process of bar-reinforced concrete filled steel tubular short columns subjected to axial compression. Firstly, the interaction process of steel tube and concrete was analyzed, and then, the simplified constitutive models of steel tube and concrete were established on the base of previous analysis results. Secondly, the relation between lateral and longitudinal strain of steel tube was analyzed based on experimental results, and a simple method was presented to calculate the lateral strain of steel tube. This method was used as the supplement to the constitutive models. Finally, a program was worked out to simulate the full load-deformation process of bar-reinforced concrete filled steel tubular short columns. The program’s simulation results of both ultimate bearing capacity and load-deformation curves are in good agreement with the experimental results.

Keywords: Bar-reinforced concrete filled steel tubular column, test, Interaction, Constitutive models, Load-deformation process, Numerical simulation.