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P. Soares¹, P. A. Costa¹ and R. Arcos^2,3

¹CONSTRUCT, Faculty of Engineering (FEUP), University of Porto, Portugal
²Serra Húnter Fellow, Universitat Politècnica de Catalunya, Spain
³Acoustical and Mechanical Engineering Laboratory, Universitat Politècnica de Catalunya, Spain

doi:10.4203/ccc.1.22.7

P. Soares, P. A. Costa, R. Arcos, "Numerical validation of a 2.5D experimental/numerical hybrid methodology for the prediction of railway-induced ground-borne vibration on buildings", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 22.7, 2022, doi:10.4203/ccc.1.22.7

Keywords: railway-induced vibration, ground-borne vibration, soil-building interaction, underground railway, propagation path, hybrid methodology.

Abstract

In this work, an experimental/numeric hybrid methodology for the assessment of building induced vibrations due to railway traffic is presented. This method has as main advantage the use of measurements of the actual vibration field to the terrain surface as an input parameter. The main application for this method is the study of the vibrations that a given building will be subjected to when built close to a railway line. A set of virtual forces is applied to a sub-model of the ground alone, making this displacement field equal to the one that is measured experimentally, allows obtaining the virtual forces to be applied to the soil-building model and which will give the vibrations to which the same building is subjected. In the present work, this methodology is presented and validated numerically by 2.5D for a case of homogeneous and stratified soil. The proposed hybrid model simplifies the usual numerical procedure as it is no longer necessary to modulate the railway infrastructure and reduces the uncertainty of the prediction due to the use of experimental site measurements.

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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: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 22.7 Numerical validation of a 2.5D experimental/numerical hybrid methodology for the prediction of railway-induced ground-borne vibration on buildings P. Soares¹, P. A. Costa¹ and R. Arcos^2,3 ¹CONSTRUCT, Faculty of Engineering (FEUP), University of Porto, Portugal ²Serra Húnter Fellow, Universitat Politècnica de Catalunya, Spain ³Acoustical and Mechanical Engineering Laboratory, Universitat Politècnica de Catalunya, Spain doi:10.4203/ccc.1.22.7 Full Bibliographic Reference for this paper P. Soares, P. A. Costa, R. Arcos, "Numerical validation of a 2.5D experimental/numerical hybrid methodology for the prediction of railway-induced ground-borne vibration on buildings", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 22.7, 2022, doi:10.4203/ccc.1.22.7 Keywords: railway-induced vibration, ground-borne vibration, soil-building interaction, underground railway, propagation path, hybrid methodology. Abstract In this work, an experimental/numeric hybrid methodology for the assessment of building induced vibrations due to railway traffic is presented. This method has as main advantage the use of measurements of the actual vibration field to the terrain surface as an input parameter. The main application for this method is the study of the vibrations that a given building will be subjected to when built close to a railway line. A set of virtual forces is applied to a sub-model of the ground alone, making this displacement field equal to the one that is measured experimentally, allows obtaining the virtual forces to be applied to the soil-building model and which will give the vibrations to which the same building is subjected. In the present work, this methodology is presented and validated numerically by 2.5D for a case of homogeneous and stratified soil. The proposed hybrid model simplifies the usual numerical procedure as it is no longer necessary to modulate the railway infrastructure and reduces the uncertainty of the prediction due to the use of experimental site measurements. download the full-text of this paper (PDF, 7 pages, 579 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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