Stress-strain relationship of FRP confined concrete columns under combined axial load and bending moment

Cao, Y, Wu, Y and Jiang, C 2018, 'Stress-strain relationship of FRP confined concrete columns under combined axial load and bending moment', Composites Part B: Engineering, vol. 134, pp. 207-217.


Document type: Journal Article
Collection: Journal Articles

Title Stress-strain relationship of FRP confined concrete columns under combined axial load and bending moment
Author(s) Cao, Y
Wu, Y
Jiang, C
Year 2018
Journal name Composites Part B: Engineering
Volume number 134
Start page 207
End page 217
Total pages 11
Publisher Elsevier
Abstract The stress-strain relationship of FRP confined concrete columns under eccentric loading is different from that under concentric loading. However, eccentric loading can have different load paths, e.g. constant axial force with increasing load eccentricity or constant load eccentricity with increasing axial load. The effect of different load paths on the stress-strain behavior of eccentrically loaded columns has remained unclear to date. It was believed previously that such difference in load paths could be insignificant for the stress-strain behavior of FRP confined concrete columns under eccentric loading. Unexpectedly, the study in this work on two different load paths demonstrates that the stress-strain behavior can be very different. A new stress-strain model for FRP confined circular concrete columns under constant axial force and increasing load eccentricity is developed in this work for engineering applications.
Subject Structural Engineering
Keyword(s) Concrete column
Confinement
Eccentric loading
Load path
Stress-strain model
DOI - identifier 10.1016/j.compositesb.2017.09.063
Copyright notice © 2017 Elsevier Ltd
ISSN 1359-8368
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