The quasi-static test was conducted in a displacement-controlled way to research the seismic behavior of reinforced concrete columns strengthened with glass-fiber sheets. Six concrete bridge pier specimens were constructed using the starter bars that were lapped with the main longitudinal reinforcing steels, in a 1/2.83 dimensional scale factor. The unidirectional glass-fiber sheets were impregnated with epoxy mortar and wrapped around the plastic hinge region of the specimens. All specimens were tested under inelastic reversal loading while simultaneously subjected to a constant axial load θ.1FckAg. Test results show that the seismic performance of retrofitted concrete columns significantly improved as a result of the confining action of the glass-fiber composite straps. The straps are highly effective in confining the core concrete and preventing the longitudinal reinforcing steels from buckling under cyclic loading.
Seismic enhancement of circular RC bridge piers with fiber composites
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 6 , 4 ; 485-493
2002-12-01
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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