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R. Velazquez-Mata, P. Galvín, A. Romero, A. Tadeu, "A 2.5D Coupled BEM Approach for the Analysis of Low-Height Railway Noise Barriers", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 19.5, 2026, doi:10.4203/ccc.15.19.5

Keywords: railway noise mitigation, low-height barrier, boundary element method, 2.5D formulation, rolling noise, insertion loss.

Abstract

This work presents a numerical study on the effectiveness of low-height barriers for railway noise mitigation. A 2.5D coupled solid-fluid formulation based on the Boundary Element Method is adopted to model the interaction between the track system and the surrounding acoustic field in an unbounded domain. The approach allows the simultaneous representation of the rail, the supporting pad, the fluid medium and additional acoustic boundaries, such as barriers and simplified vehicle envelopes. The methodology is applied to a UIC60 rail supported on a rail pad and excited by a unit vertical point load. Several low-height barrier configurations are analysed, considering different geometrical layouts and the presence of the vehicle. The acoustic response is evaluated in terms of sound pressure level and insertion loss. The analysed cases highlight the role of low-height barrier shape in the redistribution of the radiated field, as well as the contribution of the vehicle to the associated noise encapsulation effect. The proposed model provides a suitable numerical tool for the comparative analysis of near-track railway noise mitigation solutions.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 15 PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 19.5 A 2.5D Coupled BEM Approach for the Analysis of Low-Height Railway Noise Barriers R. Velazquez-Mata¹, P. Galvín¹, A. Romero¹ and A. Tadeu² ¹Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Spain ²Departamento de Engenharia Civil, Universidade de Coimbra, Portugal doi:10.4203/ccc.15.19.5 Full Bibliographic Reference for this paper R. Velazquez-Mata, P. Galvín, A. Romero, A. Tadeu, "A 2.5D Coupled BEM Approach for the Analysis of Low-Height Railway Noise Barriers", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 19.5, 2026, doi:10.4203/ccc.15.19.5 Keywords: railway noise mitigation, low-height barrier, boundary element method, 2.5D formulation, rolling noise, insertion loss. Abstract This work presents a numerical study on the effectiveness of low-height barriers for railway noise mitigation. A 2.5D coupled solid-fluid formulation based on the Boundary Element Method is adopted to model the interaction between the track system and the surrounding acoustic field in an unbounded domain. The approach allows the simultaneous representation of the rail, the supporting pad, the fluid medium and additional acoustic boundaries, such as barriers and simplified vehicle envelopes. The methodology is applied to a UIC60 rail supported on a rail pad and excited by a unit vertical point load. Several low-height barrier configurations are analysed, considering different geometrical layouts and the presence of the vehicle. The acoustic response is evaluated in terms of sound pressure level and insertion loss. The analysed cases highlight the role of low-height barrier shape in the redistribution of the radiated field, as well as the contribution of the vehicle to the associated noise encapsulation effect. The proposed model provides a suitable numerical tool for the comparative analysis of near-track railway noise mitigation solutions. download the full-text of this paper (PDF, 11 pages, 1024 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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