TY - JOUR
T1 - Probabilistic assessment of FRP-confined reinforced concrete columns
AU - Baji, Hassan
AU - Ronagh, Hamid Reza
AU - Li, Chun-Qing
PY - 2016
Y1 - 2016
N2 - This paper presents a reliability study on reinforced concrete (RC) columns retrofitted by Fibre Reinforced Polymers (FRP) confinement. First, variability of the compressive resistance of FRP-confined RC columns considering uncertainty in the model error, material properties, section dimensions, FRP strain efficiency factor and minimum load eccentricity as well as any existing correlation among random variables was studied. Then, reliability of FRP-confined RC columns designed based on the ACI 440 and the fib bulletin 14 guidelines was investigated. Results showed that in order to achieve the target reliability used in design of conventional RC columns, resistance reduction factors of these guidelines require modification. For the design of FRP-confined RC columns, a resistance reduction factor of 0.85 for the ACI 440 guideline and a partial safety factor of 1.45 for the fib bulletin 14 are suggested.
AB - This paper presents a reliability study on reinforced concrete (RC) columns retrofitted by Fibre Reinforced Polymers (FRP) confinement. First, variability of the compressive resistance of FRP-confined RC columns considering uncertainty in the model error, material properties, section dimensions, FRP strain efficiency factor and minimum load eccentricity as well as any existing correlation among random variables was studied. Then, reliability of FRP-confined RC columns designed based on the ACI 440 and the fib bulletin 14 guidelines was investigated. Results showed that in order to achieve the target reliability used in design of conventional RC columns, resistance reduction factors of these guidelines require modification. For the design of FRP-confined RC columns, a resistance reduction factor of 0.85 for the ACI 440 guideline and a partial safety factor of 1.45 for the fib bulletin 14 are suggested.
KW - carbon fiber, reinforced plastics
KW - columns
KW - polymers
KW - reinforced concrete
UR - http://handle.uws.edu.au:8081/1959.7/uws:36183
U2 - 10.1016/j.compstruct.2016.07.003
DO - 10.1016/j.compstruct.2016.07.003
M3 - Article
SN - 0263-8223
VL - 153
SP - 851
EP - 865
JO - Composite Structures
JF - Composite Structures
ER -