Observatorio de I+D+i UPM

Memorias de investigación
Ponencias en congresos:
ASSESSMENT OF LATERAL VIBRATIONS OF FOOTBRIDGES USING A FREQUENCY DOMAIN APPROACH
Año:2018
Áreas de investigación
  • Ingenieria civil
Datos
Descripción
Lateral vibrations of footbridges caused by the passage of pedestrian crowds have been the object of many studies over the last decade. However, the connection between experimental and analytical results remains tenuous and as a consequence, a common set of design criteria have not been established yet. Regarding the particular features of both the pedestrian load and the dynamic system (slender footbridges with little damping), the frequency domain analysis is a method especially efficient to evaluate the lateral response. Hence, the object of this study is to develop a general formulation, using a frequency domain approach, for assessing the lateral vibrations of any footbridge; considering the action of a crowd of pedestrians walking randomly with different frequencies. The effects of pedestrians in a swaying deck are not limited to imposing external loads; the people-structure interaction generates additional harmonics in the natural frequencies of the structure that are independent of the pedestrian frequency. Hence, human-structure phase synchronization is not a necessary condition for the development of the resonant component. The study states that it is accurate enough to calculate the structural response using only the resonant contribution. These considerations lead to a very simple formulation that permits to establish a positive relationship between the amplification of the response and the number of pedestrians.
Internacional
Si
Nombre congreso
1st CONFERENCE ON STRUCTURAL DYNAMICS 2018
Tipo de participación
960
Lugar del congreso
Madrid
Revisores
Si
ISBN o ISSN
978-84-09-01733-1
DOI
Fecha inicio congreso
20/06/2018
Fecha fin congreso
21/06/2018
Desde la página
127
Hasta la página
131
Título de las actas
Proceedings of the DINEST 2018
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Rocío García Cuevas
  • Autor: Fco. Javier Martinez Cutillas (UPM)
  • Autor: Ivan Muñoz Diaz (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Mecánica de Medios Continuos y Teoría de Estructuras
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