Scanning the modal coupling of slender suspension footbridges by a virtual moving vehicle
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F19%3A00497391" target="_blank" >RIV/68378297:_____/19:00497391 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.engstruct.2018.08.096" target="_blank" >https://doi.org/10.1016/j.engstruct.2018.08.096</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.engstruct.2018.08.096" target="_blank" >10.1016/j.engstruct.2018.08.096</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Scanning the modal coupling of slender suspension footbridges by a virtual moving vehicle
Popis výsledku v původním jazyce
In this paper, the modal coupling mechanism is studied of a single-span footbridge consisting of a suspended beam (i.e., bridge deck), two suspension cables (via hangers) and two wind guys (via wind ties). To start, the governing equations for the slender suspended beam are derived based on the linearized deflection theory for classical suspension bridges, which is followed by two parts. First, the free vibration analysis is conducted to obtain the modal frequencies and modal shapes of the suspended beam by Galerkin’s method, from which the key parameters dominating the flexural-torsional coupled vibrations are identified, along with measures for stiffness enhancement. Then, a virtual eccentrically moving vehicle is first attempted to scan (i.e. extract) the vibration messages of the suspended beam from a perspective that allows us to physically interpret the dominant mode of the flexural-torsional coupling of the beam in an easy way. The objective of this study is twofold: first to offer a complete nonlinear vibration theory for the suspension footbridge, and second to physically interpret the complicated mechanism of coupling involved.
Název v anglickém jazyce
Scanning the modal coupling of slender suspension footbridges by a virtual moving vehicle
Popis výsledku anglicky
In this paper, the modal coupling mechanism is studied of a single-span footbridge consisting of a suspended beam (i.e., bridge deck), two suspension cables (via hangers) and two wind guys (via wind ties). To start, the governing equations for the slender suspended beam are derived based on the linearized deflection theory for classical suspension bridges, which is followed by two parts. First, the free vibration analysis is conducted to obtain the modal frequencies and modal shapes of the suspended beam by Galerkin’s method, from which the key parameters dominating the flexural-torsional coupled vibrations are identified, along with measures for stiffness enhancement. Then, a virtual eccentrically moving vehicle is first attempted to scan (i.e. extract) the vibration messages of the suspended beam from a perspective that allows us to physically interpret the dominant mode of the flexural-torsional coupling of the beam in an easy way. The objective of this study is twofold: first to offer a complete nonlinear vibration theory for the suspension footbridge, and second to physically interpret the complicated mechanism of coupling involved.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GC17-26353J" target="_blank" >GC17-26353J: Teoretické prediktivní modely interakce proměnného a pohyblivého zatížení využitelné v monitoringu mostních konstrukcí</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Engineering Structures
ISSN
0141-0296
e-ISSN
—
Svazek periodika
180
Číslo periodika v rámci svazku
February
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
12
Strana od-do
574-585
Kód UT WoS článku
000456756600041
EID výsledku v databázi Scopus
2-s2.0-85057500142