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Volume Title: ICASGE2015

DOI: ICASGE-RCS

L.A. Abozaid; Ahmed Hassan; A.Y. Abouelezz and Laila Abd-EL Hafez

Many designers place a cross girder on a bridge deck to strengthen or enhance the behaviour of the slab. A theoretical study on a full-scale, single-span bridge deck was performed to study the overall behaviour of the bridge deck. Two lanes and four longitudinal girders were subjected to traffic load according to the Egyptian code of practice recommendations. Verification was performed with experimental results of reinforced concrete skewed slabs that were tested by a previous researcher. The cross girders need to perform a secondary function of preventing the slab from buckling during compression. The concrete deck slab can have a very large transverse span between the main girders. This large unsupported width can lead to buckling of the slab during compression unless this buckling is prevented by transverse girders. The cross girder is designed to be stiff enough and strong enough to prevent buckling of the skew bridge deck in addition to resisting vertical loading. Free cross girders improve the serviceability of the skew bridge deck. The supported cross girder, by its end-stiffened beam, increases the overall stiffness behaviour of the skew bridge.

Skew bridge; Nonlinear analysis; Cross girders; Standard traffic load