Journal of Theoretical
and Applied Mechanics
49, 3, pp. 705-725, Warsaw 2011
and Applied Mechanics
49, 3, pp. 705-725, Warsaw 2011
Exact solutions for free vibrations of a steel-concrete bridge
This paper deals with a class of free vibrations for a two-span, two-lane steel-concrete bridge. The deck structure is modeled as a thin, homogeneous, orthotropic plate stiffened by beams running along the longitudinal direction of the bridge. The method of separation of variables is used to find exact solutions for a class of free vibrations of the structure. A comparison between analytical and experimental natural frequencies and vibration modes of the bridge is presented and discussed.
Keywords: vibrations; bridges; orthotropic plate; eigenvalue problem; exact solutions