Analysis and Design of Bridge Superstructures
Concrete bridge superstructures typically consist of relatively thin slabs monolithically connected to each other along longitudinal joints. Although these systems satisfy the geometrical conditions for classification as thin shell structures, it is not appropriate to analyse them according to elastic shell theory. The use of elastic shell theory requires linear elastic, isotropic and homogeneous material behaviour, which is never the case in prestressed concrete bridge superstructures. At ultimate limit state, the superstructure is transformed into an inhomogeneous, fully cracked composite member. Moreover, self-equilibrating stresses of unknown magnitude and distribution are always present under service conditions, a result of differential creep and shrinkage as well as temperature gradients.
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- Hetenyi, M. 1964. Beams on Elastic Foundation. 7th ed. Ann Arbor: University of Michigan Press.Google Scholar
- Kaufmann, J., and C. Menn. 1976. Versuche über Schub bei Querbiegung (Investigations of shear and transverse bending). Institut für Baustatik und Konstruktion ETH Zürich, Bericht Nr. 7201–1. Basel and Stuttgart: Birkhäuser Verlag.Google Scholar
- Pucher, A. 1977. Einflußfelder elastischer Platten - Influence Surfaces of Elastic Plates. 5th ed. Vienna and New York: Springer-Verlag.Google Scholar
- Rüsch, H. 1972. Stahlbeton - Spannbeton. Band 1: Werkstoffeigenschaften, Bemessungsverfahren (Reinforced concrete - prestressed concrete. Vol. 1: Material properties, design procedures). Düsseldorf: Werner-Verlag.Google Scholar