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- W587977326 abstract "The use of beams with jointless decks is presented as an alternative solution for the construction and rehabilitation of multispan bridges. A finite element numerical approach is used for the determination of the instantaneous and time-dependent responses and for the strength analysis of such beams. In the analysis, the structure is modelled by two distinct elements. A two noded isoparametric beam element represents the cross sectional and material properties of the girders and deck. A two-noded, uniaxial, spring-like element is used to model the deck portion connecting the adjacent girders. Both elements have their stiffness matrices modified to account for a variable node position. The presence of pre- and post-tensioned tendons is obtained by a matrix superposition, and three levels of mild reinforcement are also considered. The effects of support displacements and temperature variation are also taken into account. Time dependent analysis considers the effect of concrete aging, differential creep, differential shrinkage, and prestressing steel relaxation. A time incremental procedure is assumed and the models suggested by the ACI Committee 209 and the PCI Committee on Prestress Losses are adopted for both concrete and steel properties respectively. Different loading sequences and construction stages may be predefined and solved in one general analysis. The model is validated using the results of analyses of 18 different beam cases. Analytical results are shown which demonstrate the effectiveness of the method and conclusions are drawn concerning their overall performance. For the covering abstract of the conference see IRRD 858334. The French title of this paper is:- Dimensionnement de poutres de ponts a tablier continu. The German title of this paper is:- Berechnung von Brueckentraegern mit kontinuierlicher Fahrbahnplatte." @default.
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- W587977326 date "1989-01-01" @default.
- W587977326 modified "2023-09-26" @default.
- W587977326 title "ANALYSIS OF BRIDGE BEAMS WITH JOINTLESS DECKS" @default.
- W587977326 hasPublicationYear "1989" @default.
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