Vibrations in buildings due to railway traffic in tunnels: Modelling strategies and influence of soil stiffness

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

Lopes, P (Author) Other; Alves Costa, P (Author) Other; Rui Calçada (Author) FEUP; Cardoso, A (Author) Other

Conference proceedings International

Title: COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering

Pages: 108-119

5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015

25 May 2015 through 27 May 2015

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00G-NX1

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 performed. A comprehensive numerical model is used to achieve the lumped objective, where the source of vibration (traintrack 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 the soil stiffness plays a relevant role on the mechanisms of propagation of vibrations through the ground as well as on the soil-structure interaction. Regarding the last topic, different approaches were attended for the inclusion of the SSI effects, namely a detailed boundary elements formulation and a simplified lumped-parameter model. The study performed revealed that the usage of lumped parameter models can be faced as a good option taking into account the compromise between accuracy of the solution and reduction of the computation effort.

Language: English

Type (Professor's evaluation): Scientific