Dynamics of a beam coupled with a prestressed string

Abstract eng:
The beam with an axial force is coupled by an elastic layer of Winkler type with the pretensiled string. It is subjected to a row of moving forces. The theoretical model corresponds to a prestressed bridge. The concrete bridges of this type are the most spread types appearing on both the road and railway bridges of small and medium spans. The governing equations form a coupled set of partial differential equations that are solved using the Fourier and LaplaceCarson integral transformations. The closed form of the solution is – as yet – derived for the undamped case.

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