Dynamics of the small-span railway bridge under moving loads

Typ: referat opublikowany w czasopiśmie

Autor

Szafrański, Marek

Wariant tytułu

polski

Dynamika mostu kolejowego małej rozpiętości pod obciążeniem ruchomym

Data wydania

2019

Opublikowane w

MATEC Web of Conferences

Vol.

262

Abstrakt

angielski

The paper presents the results of dynamic analysis of the small-span railway bridge, subjected to an action of moving trains. Numerical simulations were performed using three different load models: series of moving forces, series of moving single-mass and double-mass oscillators. The parameters of the vehicle were taken from the existing EN57 train. The parameters of the bridge were taken from the existing steel span of 10,24 m long. In both cases, the dynamic parameters were identified based on free-response measurements using modal identification techniques. Vibrations of the midpoint of the bridge as well as the mass of the oscillator have been analyzed. Numerical results obtained for individual load models were compared with the results of in-situ tests performed under operating conditions.

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