Double sub-resonance mechanism in torsional-flexural vibrations of a double-track short bridge under a moving train

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F22%3A00561250" target="_blank" >RIV/68378297:_____/22:00561250 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1142/S0219455422710055" target="_blank" >https://doi.org/10.1142/S0219455422710055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0219455422710055" target="_blank" >10.1142/S0219455422710055</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Double sub-resonance mechanism in torsional-flexural vibrations of a double-track short bridge under a moving train

Popis výsledku v původním jazyce

Train-induced resonance of a railway bridge occurs when the train speed coincides with the primary resonance speed (vbr) of the bridge, from which we can determine the sub-resonance speed as (vbr∕n|n=2,3). The primary resonance speed of a short bridge is generally much higher than the operation speeds of current high-speed trains but the corresponding sub-resonance speeds probably lie in the operation speed range. Such a resonance scenario can be observed from the vibration of a double-track bridge subjected to an eccentrically moving train, in which the deck vibration is combined by the vertical-flexural and torsional vibration modes of the bridge. Once the two modal sub-resonance speeds coincide with each other, a double sub-resonance will be developed on the bridge. In this study, an iteration-based train–bridge interaction finite element procedure will be presented to demonstrate the double resonance phenomenon. As expected, the double resonance may bring about a dramatic amplification on deck vibration. Such an excessive vibration is harmful to ballast stability and track maintenance of railway bridges.

Název v anglickém jazyce

Double sub-resonance mechanism in torsional-flexural vibrations of a double-track short bridge under a moving train

Popis výsledku anglicky

Train-induced resonance of a railway bridge occurs when the train speed coincides with the primary resonance speed (vbr) of the bridge, from which we can determine the sub-resonance speed as (vbr∕n|n=2,3). The primary resonance speed of a short bridge is generally much higher than the operation speeds of current high-speed trains but the corresponding sub-resonance speeds probably lie in the operation speed range. Such a resonance scenario can be observed from the vibration of a double-track bridge subjected to an eccentrically moving train, in which the deck vibration is combined by the vertical-flexural and torsional vibration modes of the bridge. Once the two modal sub-resonance speeds coincide with each other, a double sub-resonance will be developed on the bridge. In this study, an iteration-based train–bridge interaction finite element procedure will be presented to demonstrate the double resonance phenomenon. As expected, the double resonance may bring about a dramatic amplification on deck vibration. Such an excessive vibration is harmful to ballast stability and track maintenance of railway bridges.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GC21-32122J" target="_blank" >GC21-32122J: Monitorování stavu závěsné mostni konstrukce skenování vozidlem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Structural Stability and Dynamics

ISSN

0219-4554

e-ISSN

1793-6764

Svazek periodika

22

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

SG - Singapurská republika

Počet stran výsledku

12

Strana od-do

2271005

Kód UT WoS článku

000848703500003

EID výsledku v databázi Scopus

2-s2.0-85135356107