Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 3: Deterministic and random vibrations of exemplary system

• Autorzy: Podworna M. , Klasztorny M.

Identyfikatory

DOI

10.2478/bpasts-2014-0030

• Języki publikacji: EN

Abstrakty

EN

Based on the one-dimensional quasi-exact physical and mathematical modelling of a composite (steel-concrete) bridge/track structure/high-speed train system (BTT), developed in Part 2, advanced computer algorithms for the BTT numerical modelling and simulation as well as a computer programme to simulate vertical vibrations of BTT systems are developed. The exemplary bridge under numerical quasi-static and dynamic analysis, designed according to Polish standards, has a 15.00 m span length and belongs to the SCB series-of-types developed in Part 1. The bridge is loaded by a German ICE-3 high-speed train moving at the resonant and maximum operating speeds. A continuously welded ballasted track structure adapted to high operating velocities is applied. The output quantities include: time-histories of the vertical deflection of the main beams at the midspan, time-histories of the longitudinal normal stress in the bottom fibres of the main beams at the midspan, time-histories of the vertical acceleration of the bridge deck at the midspan, time-histories of the vertical accelerations of the suspension pivots in car-bodies, time-histories of the dynamic pressures of the wheel sets of moving rail-vehicles. The design quantities, understood as the extreme values of the output quantities, are used to verify the design conditions. The basic random factor, i.e. vertical track irregularities of the track, is taken into consideration. Basic statistics of the design quantities treated as random variables are calculated and taken into account in the design conditions.

Słowa kluczowe

EN

composite steel-concrete bridge; ballasted track structure; high-speed train; design; simulation; numerical analysis

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2014
• Tom: Vol. 62, nr 2
• Strony: 305--320
• Opis fizyczny: Bibliogr. 14 poz., tab., wykr., rys.

Twórcy

autor

Podworna M.

• Institute of Civil Engineering, Wroclaw University of Technology, 27 Wyspianskiego St., 50-370 Wroclaw, Poland

autor

Klasztorny M.

• Department of Mechanics and Applied Computer Science, Military University of Technology, 2 Kaliskiego St., 00-908 Warsaw, Poland

Bibliografia

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