Influence of soil stiffness on building vibrations due to railway traffic in tunnels: Numerical study

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Patricia Lopes (Author) FEUP; Alves Costa, PA (Author) FEUP; Calcada, R (Author) FEUP; Silva Cardoso, AS (Author) FEUP

Journal

Title: Computers and Geotechnics

Vol. 61

Pages: 277-291

ISSN: 0266-352X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 61 Citations

ISI Web of Science

Scopus - 83 Citations

Scientific classification

FOS: Engineering and technology > Environmental engineering

Other information

Authenticus ID: P-009-NSB

DOI: 10.1016/j.compgeo.2014.06.005

Abstract (EN): In this paper a numerical study about the influence of soil stiffness on the assessment of vibrations induced by railway traffic in tunnels is presented. A comprehensive numerical model is used to achieve the lumped objective, where the source of vibration (train-track interaction), the propagation of vibrations (tunnel-ground system) and their reception (building close to the railway infrastructure) are simulated by a sub-structuring approach. It was found that soil stiffness plays a relevant role on the mechanisms of propagation of vibrations through the ground as well as on soil-structure interaction. Regarding the last topic, different approaches were made for the inclusion of the SSI effects, namely a detailed boundary elements formulation and a simplified lumped-parameter model. The performed study revealed that the usage of lumped parameter models can be seen as a good option considering the compromise between accuracy of the solution and reduction of the computation effort.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15