Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Development of a specification for bridge seismic retrofit with carbon fiber reinforced polymer composites
The U.S. Interstate 80 bridge over State Street in Salt Lake City is very near the Wasatch fault, which is active and capable of producing large earthquakes. The bridge was designed and built in 1965 according to the 1961 American Association of State Highway Officials specifications, which did not consider erthquake-induced forces or displacements. The bridge consists of reinforced concrete bents supporting steel plate welded girders. The bents are supported on cast-in-place concrete piles and pile caps. A seismic retrofit design was developed using carbon fiber reinforced polymer (CFRP) composites, which was implemented in the summer of 2000 and the summer of 2001, to improve the displacement ductility of the bridge. The seismic retrofit included column jacketing, as well as wrapping of the bent cap and bent cap-column joints for confinement, flexural, and shear strength increase. This paper describes the specifications developed for the CFRP composite column jackets and composite bent wrap. The specifications included provisions for materials, constructed thickness based on strength capacity, and an environmental durability reduction factor. Surface preparation, finish coat requirements, quality assurance provisions, which included sampling and testing, and constructability issues regarding the application of fiber composite materials in the retrofit of concrete bridges are also described.
Development of a specification for bridge seismic retrofit with carbon fiber reinforced polymer composites
The U.S. Interstate 80 bridge over State Street in Salt Lake City is very near the Wasatch fault, which is active and capable of producing large earthquakes. The bridge was designed and built in 1965 according to the 1961 American Association of State Highway Officials specifications, which did not consider erthquake-induced forces or displacements. The bridge consists of reinforced concrete bents supporting steel plate welded girders. The bents are supported on cast-in-place concrete piles and pile caps. A seismic retrofit design was developed using carbon fiber reinforced polymer (CFRP) composites, which was implemented in the summer of 2000 and the summer of 2001, to improve the displacement ductility of the bridge. The seismic retrofit included column jacketing, as well as wrapping of the bent cap and bent cap-column joints for confinement, flexural, and shear strength increase. This paper describes the specifications developed for the CFRP composite column jackets and composite bent wrap. The specifications included provisions for materials, constructed thickness based on strength capacity, and an environmental durability reduction factor. Surface preparation, finish coat requirements, quality assurance provisions, which included sampling and testing, and constructability issues regarding the application of fiber composite materials in the retrofit of concrete bridges are also described.
Development of a specification for bridge seismic retrofit with carbon fiber reinforced polymer composites
Entwicklung einer Spezifikation für den erdbebensicheren Ausbau einer Brücke mittels eines faserverstärkten Kunststoffs
Pantelides, Chris P. (Autor:in) / Cercone, Larry (Autor:in) / Policelli, Frederick (Autor:in)
Journal of Composites for Construction ; 8 ; 88-96
2004
9 Seiten, 8 Bilder, 5 Tabellen, 20 Quellen
Aufsatz (Zeitschrift)
Englisch
Brücke (Bauwerk) , Retrofitting , erdbebensicheres Bauwerk , Spezifikation (Normung) , carbonfaserverstärkter Kunststoff , Stahlbeton , USA (United States of America) , Pfeiler , Duktilität , Ummantelung , Biegefestigkeit , Scherfestigkeit , Festigkeitserhöhung , Verstärkung (Festigkeit) , Bauvorschrift
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Seismic Retrofit of Bridge Joints in Central U.S. with Carbon Fiber-Reinforced Polymer Composites
| Online Contents | 2007
RETROFIT OF REINFORCED CONCRETE BRIDGES WITH CARBON FIBER REINFORCED POLYMER COMPOSITES
| British Library Conference Proceedings | 1999