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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GC21-32122J" target="_blank" >GC21-32122J: Vehicle scanning-based structure monitoring for cable supported bridges</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Name of the periodical

International Journal of Structural Stability and Dynamics

ISSN

0219-4554

e-ISSN

1793-6764

Volume of the periodical

22

Issue of the periodical within the volume

16

Country of publishing house

SG - SINGAPORE

Number of pages

12

Pages from-to

2271005

UT code for WoS article

000848703500003

EID of the result in the Scopus database

2-s2.0-85135356107