Memorias de investigación
Ponencias en congresos:
Dynamic Effects of Railway Traffic Due to Lateral Motion in Long Viaducts with High Piers
Año:2011
Áreas de investigación
  • Ingenieria mecanica,
  • Ingenieria civil
Datos
Descripción
The layout of new high-speed railway lines often requires long slender viaducts, including continuous decks with lengths of 1000 m or more, and high piers or arches with heights over 70 m. These structures generally exhibit a high lateral compliance. The fundamental mode of vibration usually corresponds to this lateral motion, with frequencies lower than 1 Hz and associated to long wavelengths. Current experience on lateral behavior of bridges under traffic includes research work carried out by ERRI D181 committee, which considered problems in European bridges for conventional rail with steel open decks, and of much shorter length and deformation wavelengths. According to the conclusions from ERRI minimum lateral vibration frequencies of spans are required to be higher than 1.2 Hz in the new design codes. However, this case does not correspond to the high speed rail viaducts described above, for which there is so far not enough evidence on the behavior nor sufficient knowledge of the relevant mechanisms. In this work we present newly developed models for considering the coupled dynamic behavior of vehicles and structure in railway viaducts. The structure is discretised with finite elements of beam and shell type, and vehicles are considered with 3D multibody models, within ABAQUS. A novel technique for considering contact between wheels and rails has been developed. This model includes both vertical and lateral contact, incorporating an implementation of Kalker?s FASTSIM solution technique, providing adequate simulation of lateral nosing motion of railway vehicles. The models developed are applied to a representative case, the ?Arroyo de Las Piedras? viaduct with a total length of 1209 m and piers of 94m height. Several simulation scenarios are compared, considering track alignment irregularities or not as well as full interaction models or simpler moving load models.
Internacional
Si
Nombre congreso
COMPDYN 2011 3rd ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Tipo de participación
960
Lugar del congreso
Corfú, Grecia
Revisores
Si
ISBN o ISSN
978-960-99994-1-0
DOI
Fecha inicio congreso
25/05/2011
Fecha fin congreso
28/05/2011
Desde la página
694
Hasta la página
709
Título de las actas
COMPDYN 2011 3rd ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering PROCEEDINGS
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Mecánica Computacional
  • Centro o Instituto I+D+i: Centro de Seguridad y Durabilidad Estructural y de Materiales (CISDEM). Centro Mixto UPM-CSIC
  • Departamento: Mecánica de Medios Continuos y Teoría de Estructuras