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

• Type: Chapter or Part of a Book
• Date: 2013

Authors

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

Book

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

Pages: 133-166

ISBN: 78-162618240-0

Indexing

ISI Web of Knowledge

Scopus - 18 Citations

Scientific classification

FOS: Engineering and technology

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 34