Measuring dynamic effects on underpasses of high-speed railway lines

Vega Domínguez, Jaime; Hermanns, Lutz Karl Heinz; Alarcón Álvarez, Enrique y Fraile de Lerma, Alberto (2014). Measuring dynamic effects on underpasses of high-speed railway lines. "Structure and Infrastructure Engineering: Maintenance, Management, Life-Cycle Design and Performance", v. 10 (n. 1); pp. 41-56. ISSN 1573-2479. https://doi.org/10.1080/15732479.2012.692698.

Descripción

Título: Measuring dynamic effects on underpasses of high-speed railway lines
Autor/es:
  • Vega Domínguez, Jaime
  • Hermanns, Lutz Karl Heinz
  • Alarcón Álvarez, Enrique
  • Fraile de Lerma, Alberto
Tipo de Documento: Artículo
Título de Revista/Publicación: Structure and Infrastructure Engineering: Maintenance, Management, Life-Cycle Design and Performance
Fecha: 2014
Volumen: 10
Materias:
Palabras Clave Informales: High-speed train; Railway; Underpass; Ballast instability
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Mecánica Estructural y Construcciones Industriales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Underpasses are common in modern railway lines. Wildlife corridors and drainage conduits often fall into this category of partially buried structures. Their dynamic behaviour has received far less attention than that of other structures such as bridges, but their large number makes their study an interesting challenge in order to achieve safe and cost-effective structures. As ballast operations are a key life cycle cost, and excessive vibrations increase the need of ballast regulation in order to ensure track geometry, special attention is paid to accelerations, the values of which should be limited to avoid track instability according to Eurocode. In this paper, the data obtained during on site measurements on culverts belonging to a Spanish high-speed train line are presented. A set of six rectangular-shaped, closed-frame underpasses were monitored under traffic loading. Acceleration records at different points of the structures are presented and discussed. They reveal a non-uniform dynamic response of the roof-slab, with the highest observed values below the occupied track. Also, they indicate that the dynamic response is important up to frequencies higher than those usually observed for standard simply supported bridges. Finally, they are used to obtain a heuristic rule to estimate acceleration levels on the roof-slab.

Más información

ID de Registro: 21574
Identificador DC: http://oa.upm.es/21574/
Identificador OAI: oai:oa.upm.es:21574
Identificador DOI: 10.1080/15732479.2012.692698
URL Oficial: http://www.tandfonline.com/doi/abs/10.1080/15732479.2012.692698#tabModule
Depositado por: Biblioteca ETSI Industriales
Depositado el: 11 Nov 2013 11:03
Ultima Modificación: 01 Feb 2016 23:56
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