Effect of Cross-Sectional Aspect Ratio on Rectangular FRP-Concrete-Steel Double-Skin Tubular Columns under Axial Compression
Joint Authors
Zhang, Bing
Zhang, Qian-Biao
Hu, Xia-Min
Wei, Wei
Zhang, Ning-Yuan
Zhang, Yi-Jie
Source
Advances in Polymer Technology
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-05-27
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Hybrid FRP-concrete-steel double-skin tubular columns (hybrid DSTCs) are novel hollow columns consisting of an outer FRP tube, an inner steel tube, and the concrete between the two tubes.
Hybrid DSTCs possess important advantages, such as excellent corrosion resistance as well as remarkable seismic resistance.
However, existing studies are mainly focused on hybrid DSTCs with a circular cross section or a square cross section.
When a column is subjected to different load levels in the two horizontal directions, a rectangular column is preferred as it can provide different bending stiffness and moment capacity around its two axes of symmetry.
This paper presents an experimental study on rectangular DSTCs with a particular focus on the effect of the cross-sectional aspect ratio (i.e., the ratio of the breadth to the width of the rectangular cross section).
The effect of the cross-sectional shape of the inner steel tube (i.e., both elliptical and rectangular inner steel tubes were used) and the effect of FRP tube thickness were also investigated experimentally.
Experimental results show that a larger aspect ratio will have no negative effect on the confinement effect in rectangular DSTCs; a rectangular DSTC with a larger aspect ratio generally has a larger ultimate axial strain and a higher axial stress at the ultimate axial strain; rectangular DSTCs with an elliptical steel tube generally have better performance than corresponding specimens with a rectangular steel tube.
An existing model, which was developed based on a model for rectangular FRP-confined concrete columns and a model for circular DSTCs, is verified using the test results of the present study.
The model generally provides close predictions for the peak axial stress of the confined concrete but yields conservative predictions for the ultimate axial strain for rectangular DSTCs.
American Psychological Association (APA)
Zhang, Bing& Hu, Xia-Min& Wei, Wei& Zhang, Qian-Biao& Zhang, Ning-Yuan& Zhang, Yi-Jie. 2020. Effect of Cross-Sectional Aspect Ratio on Rectangular FRP-Concrete-Steel Double-Skin Tubular Columns under Axial Compression. Advances in Polymer Technology،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1130176
Modern Language Association (MLA)
Zhang, Bing…[et al.]. Effect of Cross-Sectional Aspect Ratio on Rectangular FRP-Concrete-Steel Double-Skin Tubular Columns under Axial Compression. Advances in Polymer Technology No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1130176
American Medical Association (AMA)
Zhang, Bing& Hu, Xia-Min& Wei, Wei& Zhang, Qian-Biao& Zhang, Ning-Yuan& Zhang, Yi-Jie. Effect of Cross-Sectional Aspect Ratio on Rectangular FRP-Concrete-Steel Double-Skin Tubular Columns under Axial Compression. Advances in Polymer Technology. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1130176
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1130176