Seismic Behavior of Hollow-Core FRP-Concrete-Steel Bridge Columns
This paper presents the behavior of precast hollow-core fiber reinforced polymer (FRP)-concrete-steel tubular columns (HC-FCS) under combined axial and lateral loading. The HC-FCS column consisted of a concrete wall sandwiched between an outer FRP tube and an inner steel tube. Two large scale columns, RC-column and HC-FCS column were investigated during this study. The steel tube of the HC-FCS column was embedded into the footing while the FRP tube was stopped at the top of the footing level, i.e., the FRP tube provided confinement only. The hollow steel tube is the only reinforcement for shear and flexure inside the HC-FCS column. The FRP in HC-FCS ruptured at lateral drift of 15.2% while the RC-column displayed 10.9% lateral drift at failure. The RC-column failed due to rebar rupture and the moment capacity suddenly dropped more than 20% after that. However, the HC-FCS suffered gradual failure due to concrete crushing, steel local buckling and yielding, followed by FRP rupture.
O. I. Abdelkarim et al., "Seismic Behavior of Hollow-Core FRP-Concrete-Steel Bridge Columns," Proceedings of the 2015 Structures Congress (2015, Portland, OR), pp. 585-596, American Society of Civil Engineers (ASCE), Apr 2015.
The definitive version is available at https://doi.org/10.1061/9780784479117.051
2015 Structures Congress (2015: Apr. 23-25, Portland, OR)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Buckling; Concretes; Fiber reinforced plastics; Optical fibers; Reinforced concrete; Reinforcement; Tubes (components); Tubular steel structures; Concrete crushing; Concrete-steel bridge; Hollow core fiber; Lateral drifts; Lateral loading; Moment capacity; Seismic behavior; Tubular columns; Steel fibers
International Standard Book Number (ISBN)
Article - Conference proceedings
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