Application of a simple biomechanical model of a pedestrian in the solution of the dynamic response of a light bridge structure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F15%3APU117969" target="_blank" >RIV/00216305:26110/15:PU117969 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Application of a simple biomechanical model of a pedestrian in the solution of the dynamic response of a light bridge structure

Popis výsledku v původním jazyce

The evaluation of the slender constructions of pedestrian footbridges includes the assessment of comfort when crossing the bridge. Aside from the effects of wind, comfort is connected with the prescribed values for the amplitude of the displacements and acceleration of the deck of a bridge structure excited by the movement of pedestrians. When designing such a structure it is necessary to determine the values for the oscillation of the bridge deck in the perpendicular and transverse directions. Basically, these calculations are carried out in a simplified manner as if there were a harmonic response at a location oscillated by selected oscillation wave shapes within a range from 0.5 to 3.5 Hz. Dynamic excitation is often considered to be the 1st harmonic from the spectrum of excitation forces triggered by a pedestrian as they walk. A more precise calculation involves the application of this force at a varying position. In this way, the movement of a pedestrian along the bridge deck can be simulated. This loading model does not, however, take into account the interaction between the pedestrian and the structure, i.e. the amplitude of the force is constant. The present contribution introduces the option of applying a simple biomechanical model in the solution of the dynamic response of a structure to pedestrian behaviour. The composition of a person is analysed, with subsequent simplification. The resultant model is single-stage only, but it allows the inertial force of a moving pedestrian to be included in the calculations alongside damping and the variable forces involved in the human-bridge dynamic interaction. The conducted numerical study concerns the monitoring of interactive forces between a pedestrian and a structure in connection with the mass and ductility of the structure.

Název v anglickém jazyce

Application of a simple biomechanical model of a pedestrian in the solution of the dynamic response of a light bridge structure

Popis výsledku anglicky

The evaluation of the slender constructions of pedestrian footbridges includes the assessment of comfort when crossing the bridge. Aside from the effects of wind, comfort is connected with the prescribed values for the amplitude of the displacements and acceleration of the deck of a bridge structure excited by the movement of pedestrians. When designing such a structure it is necessary to determine the values for the oscillation of the bridge deck in the perpendicular and transverse directions. Basically, these calculations are carried out in a simplified manner as if there were a harmonic response at a location oscillated by selected oscillation wave shapes within a range from 0.5 to 3.5 Hz. Dynamic excitation is often considered to be the 1st harmonic from the spectrum of excitation forces triggered by a pedestrian as they walk. A more precise calculation involves the application of this force at a varying position. In this way, the movement of a pedestrian along the bridge deck can be simulated. This loading model does not, however, take into account the interaction between the pedestrian and the structure, i.e. the amplitude of the force is constant. The present contribution introduces the option of applying a simple biomechanical model in the solution of the dynamic response of a structure to pedestrian behaviour. The composition of a person is analysed, with subsequent simplification. The resultant model is single-stage only, but it allows the inertial force of a moving pedestrian to be included in the calculations alongside damping and the variable forces involved in the human-bridge dynamic interaction. The conducted numerical study concerns the monitoring of interactive forces between a pedestrian and a structure in connection with the mass and ductility of the structure.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA14-25320S" target="_blank" >GA14-25320S: Aspekty použití komplexních nelineárních materiálových modelů</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

European Safety and Reliability conference

ISBN

978-1-138-02879-1

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

2919-2928

Název nakladatele

Neuveden

Místo vydání

Zurich, Switzerland

Místo konání akce

Zürich

Datum konání akce

3. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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