Shifted resonance of railway bridges under trains passing by each other

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F22%3A00558755" target="_blank" >RIV/68378297:_____/22:00558755 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1142/S0219455422710018" target="_blank" >https://doi.org/10.1142/S0219455422710018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0219455422710018" target="_blank" >10.1142/S0219455422710018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Shifted resonance of railway bridges under trains passing by each other

Popis výsledku v původním jazyce

Dynamic vehicle-bridge interaction (VBI) plays a crucial role in the train-induced vibrations of a railway bridge for its coupling effects may reduce the bridge response and down-shift the resonant speed. The commonly used nominal theoretical resonant speed (= f(b)D) of a typical railway bridge, however, is only related to the bridge frequency (f(b)) and car length (D), but it neglects the VBI effects of the moving trains. Such a shifted resonance phenomenon would become significant for a bridge under two trains passing by each other. This study develops a method using an equivalent modal mass to be added onto the bridge to account for the frequency shift due to the presence of multiple train cars for estimation of the shifted resonant speed. The numerical study demonstrates that the proposed method can predict the shifted resonant speed and explain the shifted-resonance phenomenon of railway bridges under train passages.

Název v anglickém jazyce

Shifted resonance of railway bridges under trains passing by each other

Popis výsledku anglicky

Dynamic vehicle-bridge interaction (VBI) plays a crucial role in the train-induced vibrations of a railway bridge for its coupling effects may reduce the bridge response and down-shift the resonant speed. The commonly used nominal theoretical resonant speed (= f(b)D) of a typical railway bridge, however, is only related to the bridge frequency (f(b)) and car length (D), but it neglects the VBI effects of the moving trains. Such a shifted resonance phenomenon would become significant for a bridge under two trains passing by each other. This study develops a method using an equivalent modal mass to be added onto the bridge to account for the frequency shift due to the presence of multiple train cars for estimation of the shifted resonant speed. The numerical study demonstrates that the proposed method can predict the shifted resonant speed and explain the shifted-resonance phenomenon of railway bridges under train passages.

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

7

Stát vydavatele periodika

SG - Singapurská republika

Počet stran výsledku

11

Strana od-do

2271001

Kód UT WoS článku

000810492300002

EID výsledku v databázi Scopus

2-s2.0-85123985728