Roads and Bridges - Drogi i Mosty
2, 3, 2003, 73-93

Dynamic analysis of composite beam bridges along Polish highspeed railway line ”CMK” at conditions of increased train velocities of 160÷250 km/h

Marian Klasztorny Mail
Warsaw University of Technology, Faculty of Production Engineering

Abstract

Description of modeling of the composite beam bridges of the single-track, single-span, simply-supported type, loaded by moving high speed train is presented in the paper. The analysed 2D model of the bridge – track – moving train system, takes into account a sectorially-prismatic cross-section of the superstructure, deformable transient zones of the track, nonlinear elastic-damping properties of the ballast layer, nonlinear elastic properties of the fasteners, the first- and second-stage suspensions of rail-vehicles. The results of dynamic analysis of the series-of-types of the Polish highspeed railway line ”CMK” composite beam bridges are presented for service velocities of 160÷250 km/h and span lengths of the range 14.40÷29.40 m. The computations have been performed with the original author’s programme, DYRAB2, useful for simulation of vertical vibrations of bridge – track – moving train systems. The dynamic effort of steel plate main girders is assessed from the simplified load capacity condition, taking into account high-cyclic fatigue. Assessment of stability of the track on the bridges is based on the vertical vibration amplitudes of the sleepers.

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References


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Dynamic analysis of composite beam bridges along Polish highspeed railway line ”CMK” at conditions of increased train velocities of 160÷250 km/h

  
Klasztorny, Marian. Dynamic analysis of composite beam bridges along Polish highspeed railway line ”CMK” at conditions of increased train velocities of 160÷250 km/h. Roads and Bridges - Drogi i Mosty, [S.l.], v. 2, n. 3, p. 73-93, dec. 2014. ISSN 2449-769X. Available at: <>. Date accessed: 19 Feb. 2019.