Numerical modeling of vibrations induced in tunnels: A 2.5D FEM-PML approach

• Tipo: Capítulo ou Parte de Livro
• Data: 2013

Autores

P. Lopes (Autor) FEUP; P. A. Costa (Autor) FEUP; Rui Calçada (Autor) FEUP; António Silva Cardoso (Autor) FEUP

Livro

Título: Traffic Induced Environmental Vibrations and Controls: Theory and Application

Páginas: 133-166

ISBN: 78-162618240-0

Indexação

ISI Web of Knowledge

Scopus - 27 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-008-YM4

Abstract (EN): The simulation and study of problems related with vibrations induced by railwaytraffic in tunnels is a difficult and complex task. The semi-infinitive character of thedomain surrounding the tunnel associated to the 3-dimensional characteristics of theproblem is one of the major causes of that complexity. An efficient and accurate solutionfor the simulation of the dynamic behavior of very long structures, i.e., railways, roads ortunnel, is proposed by using 2.5D techniques in the context of the finite elements method,and adopting perfect matched layers (PML's) for the treatment of the boundaries due tothe truncation of the finite elements mesh. Since the resource to 2.5D FEM-PMLapproach is not very usual, the equations of the 2.5D PML are derived, highlighting thecompatibility with the 2.5D FEM. After that brief presentation of the model, a range ofvalidation examples are depicted, showing the accuracy of the model. By last, aparametric study is presented in order to evaluate the influence of some tunnel andground properties in the vibrations assessed at the ground surface.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 34