ABSTRACT
Bridges on high-speed railways will inevitably undergo quasi-static deformations during the long-term operation of trains, owing to foundation settlement, variation of temperature and creep of the concrete. To investigate these defamations on ride comfort of the trains, a train-bridge dynamic interaction model is established comprising the finite element model of a high-speed train and that of simply supported bridges with 10 spans. The quasi-static track deformation is taken into account by mapping the deformation of bridge into the track irregularity. Discussions are conducted on the effects of uneven settlement of piers, flexural deformation of beams and their combination. Finally, the limit deflections of the bridge subjected to design live loads are proposed considering quasi-static deformations of track.
