Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
European prestress specialists perfect their bridge technique
Oleron Viaduct near Bordeaux, France is 9400 ft between abutments; major spans are 295 ft and approach spans are 130 ft, there are 45 slipformed piers; deck width is 34 ft 10 in.; viaduct is made up of 870 precast units, weighing from 45 to 80 tons each; prestressed concrete box girders are assembled by cantilevering symmetrically, section by section, from each pier until spans meet; all work is carried out from above, eliminating need for falsework and making construction indifferent to conditions below; on long structures joints at 1000 to 1500 ft intervals should be placed at contraflexure points rather than at crown to minimize effects of long term concrete and steel creep.
European prestress specialists perfect their bridge technique
Oleron Viaduct near Bordeaux, France is 9400 ft between abutments; major spans are 295 ft and approach spans are 130 ft, there are 45 slipformed piers; deck width is 34 ft 10 in.; viaduct is made up of 870 precast units, weighing from 45 to 80 tons each; prestressed concrete box girders are assembled by cantilevering symmetrically, section by section, from each pier until spans meet; all work is carried out from above, eliminating need for falsework and making construction indifferent to conditions below; on long structures joints at 1000 to 1500 ft intervals should be placed at contraflexure points rather than at crown to minimize effects of long term concrete and steel creep.
European prestress specialists perfect their bridge technique
Eng News-Rec
Engineering News-Record ; 175
1965
3 pages
Aufsatz (Zeitschrift)
Englisch
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Bridge prestress device and bridge prestress construction method
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