Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recent earthquakes have repeatedly demonstrated the vulnerabilities of older reinforced concrete piers to seismic deformation demands and shear strength. The primary objective of this paper is to present the results of an investigation on hollow piers retrofitted with CFRP (carbon fiber-reinforced polymer) sheets. An analytical model incorporating the effect of CFRP sheets is also presented to predict the lateral loading characteristics for hollow piers. Based on the studies presented in this paper the following conclusions can be made: The limited testing indicated that the UCSD model can be used for hollow sections with a CFRP retrofit. The tested hollow bridge piers retrofitted by CFRP sheets have acceptable seismic performance, because their ductility factores range from 4.9 to 5.5. CFRP sheets can effectively improve both the ductility factor and the shear capacity of hollow bridge piers and can successfully transform the failure mode from shear or flexure-shear to flexure. The confinement provided by CFRP sheets in the circular pier is more effective than that in the rectangular pier.
Recent earthquakes have repeatedly demonstrated the vulnerabilities of older reinforced concrete piers to seismic deformation demands and shear strength. The primary objective of this paper is to present the results of an investigation on hollow piers retrofitted with CFRP (carbon fiber-reinforced polymer) sheets. An analytical model incorporating the effect of CFRP sheets is also presented to predict the lateral loading characteristics for hollow piers. Based on the studies presented in this paper the following conclusions can be made: The limited testing indicated that the UCSD model can be used for hollow sections with a CFRP retrofit. The tested hollow bridge piers retrofitted by CFRP sheets have acceptable seismic performance, because their ductility factores range from 4.9 to 5.5. CFRP sheets can effectively improve both the ductility factor and the shear capacity of hollow bridge piers and can successfully transform the failure mode from shear or flexure-shear to flexure. The confinement provided by CFRP sheets in the circular pier is more effective than that in the rectangular pier.
Shear retrofit of hollow bridge piers with carbon fiber-reinforced polymer sheets
Retrofitting der Scherfestigkeit von hohlen Brückenpfeilern mit carbonfaserverstärkten Kunststoffplatten
Journal of Composites for Construction ; 9 ; 327-336
2005
10 Seiten, 11 Bilder, 2 Tabellen, 40 Quellen
Aufsatz (Zeitschrift)
Englisch
Shear Retrofit of Hollow Bridge Piers with Carbon Fiber-Reinforced Polymer Sheets
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