Influence of the Second Bending Mode on the Response of High-Speed Bridges at Resonance

Museros Romero, Pedro y Alarcón Álvarez, Enrique (2005). Influence of the Second Bending Mode on the Response of High-Speed Bridges at Resonance. "Journal of Structural Engineering", v. 131 (n. 3); pp. 405-415. ISSN 1943-541X. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:3(405).

Descripción

Título: Influence of the Second Bending Mode on the Response of High-Speed Bridges at Resonance
Autor/es:
  • Museros Romero, Pedro
  • Alarcón Álvarez, Enrique
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Structural Engineering
Fecha: Marzo 2005
Volumen: 131
Materias:
Palabras Clave Informales: Bridges - railroad - Bridge loads - Bridge design - Dynamic loads - Railroad engineering - Repeated loads - Resonance - Oscillations
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

This paper deals with the assessment of the contribution of the second bending mode to the dynamic behavior of simply supported railway bridges. Traditionally the contributions of modes higher than the fundamental have been considered of little importance for the computation of the magnitudes of interest to structural engineers (vertical deflections, bending moments, etc.). Starting from the dimensionless equations of motion of a simply supported beam subjected to moving loads, the key parameters governing the dynamic behavior are identified. Then, a parametric study over realistic ranges of values of those parameters is conducted, and the influence of the second mode examined in detail. The main purpose is to decide whether the second mode should be taken into account for the determination of the maximum displacement and acceleration in high-speed bridges. In addition, the reasons that cause the contribution of the second bending mode to be relevant in some situations are highlighted, particularly with regard to the computation of the maximum acceleration.

Más información

ID de Registro: 32352
Identificador DC: http://oa.upm.es/32352/
Identificador OAI: oai:oa.upm.es:32352
Identificador DOI: 10.1061/(ASCE)0733-9445(2005)131:3(405)
URL Oficial: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9445%282005%29131%3A3%28405%29
Depositado por: Biblioteca ETSI Industriales
Depositado el: 16 Oct 2014 06:28
Ultima Modificación: 16 Oct 2014 06:37
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