DYNAMIC ANALYSIS OF THE FOOTBRIDGE EXPOSED TO PEDESTRIAN LOADING

Kód výsledku v IS VaVaI

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RIV/68407700:21720/23:00367497

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

DYNAMIC ANALYSIS OF THE FOOTBRIDGE EXPOSED TO PEDESTRIAN LOADING

Popis výsledku v původním jazyce

The submitted paper is dealing with the phenomenon of the human induced vibration caused by walking pedestrians. Pedestrians naturally work as a source of a periodic load, which is typically in the resonance range with some of the natural frequencies of the crossed footbridge. Typical pacing frequency of the normal walk is close to 2 Hz. Unfortunately, the most of footbridges have some of the natural frequencies in the range 1.5 – 3 Hz. These values can be easily reached by pedestrians, which could lead to the uncomfortable level of the structural vibration as could be seen at the Millennium bridge in London. In the submitted paper, we are going to subject the footbridge, acting as the simply supported beam, to the theoretical dynamic analysis. The dynamic analysis will be divided into the modal analysis and the force vibration analysis, which is accomplished by the Modal decomposition method. This approach allows us to execute direct integration of the independent equations of motion. Total number of these modal equations is significantly less than number of equations directly assembled by the Finite element method. The pedestrians will be mathematically described by the periodic shifting force with constant velocity of motion.

Název v anglickém jazyce

DYNAMIC ANALYSIS OF THE FOOTBRIDGE EXPOSED TO PEDESTRIAN LOADING

Popis výsledku anglicky

The submitted paper is dealing with the phenomenon of the human induced vibration caused by walking pedestrians. Pedestrians naturally work as a source of a periodic load, which is typically in the resonance range with some of the natural frequencies of the crossed footbridge. Typical pacing frequency of the normal walk is close to 2 Hz. Unfortunately, the most of footbridges have some of the natural frequencies in the range 1.5 – 3 Hz. These values can be easily reached by pedestrians, which could lead to the uncomfortable level of the structural vibration as could be seen at the Millennium bridge in London. In the submitted paper, we are going to subject the footbridge, acting as the simply supported beam, to the theoretical dynamic analysis. The dynamic analysis will be divided into the modal analysis and the force vibration analysis, which is accomplished by the Modal decomposition method. This approach allows us to execute direct integration of the independent equations of motion. Total number of these modal equations is significantly less than number of equations directly assembled by the Finite element method. The pedestrians will be mathematically described by the periodic shifting force with constant velocity of motion.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of International Structural Engineering and Construction

ISBN

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ISSN

2644-108X

e-ISSN

2644-108X

Počet stran výsledku

6

Strana od-do

"85-1"-"85-6"

Název nakladatele

ISEC Press

Místo vydání

Fargo

Místo konání akce

Chicago

Datum konání akce

14. 8. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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