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Fast Computational Model for railway induced vibrations and re-radiated noise

Total activity: 4
Type of activity
Competitive project
Acronym
VibWay
Funding entity
AGENCIA ESTATAL DE INVESTIGACION
Funding entity code
RTI2018-096819-B-I00
Amount
100.430,00 €
Start date
2019-01-01
End date
2021-12-31
Abstract
The aim of VIBWAY project is to develop a computational tool for the prediction of vibration and re-radiated noise in building due to railway infrastructures. The tool will be developed in the basis of semi-analytical modelling, which ensures low computational and engineering costs. On one hand, the semi-analytical models for the ground response due to at-grade and underground railway infrastructures will be improved, extended, verified and validated. Specifically, they will be revised in order to adapt them to the significant range of frequencies required for re-radiated noise predictions. Faster and more accurate models will be implemented for underground infrastructures of three
different types: simple, double-deck and cut-and-cover tunnel infrastructures. The verification and validation of these models will be done in the framework of a benchmark comparison of different existing tools around the world. For the case of at-grade infrastructures, the validation will be done using the experimental measurements done the European project RIVAS. For the case of underground, several experimental measurement in real sites will be performed for this purpose. On the other hand, a semi-analytical building dynamic model will be improved, verified and validated. Firstly, a comparison between different models for pile foundations will be performed in order to
verify the new efficient semi-analytical model to be developed in the framework of this project. These models will be also compared with experimental measurements in the scale model previous developed by the research group, Then, the same process will be held for the complete building model. Different kinds of building models will be considered: based on columns or loading walls, and based on pile on footing slab foundations. The ground response models initially validated will be coupled with this building model to create the global computational tool that will be called VIBWAY. The structural response of the building will be used to obtain the re-radiated noise inside. In
this regard, three types of modelling strategies will be compared, jointly with experimental measurements in the scale model. Finally, modeling of mitigation measures, as dynamic vibrations absorbers, isolation screens and base isolation for buildings will be developed and included in the general tool. Again, the scale model will be used for the verification of this models.
Keywords
experimental, ferrocarril, modelling, modelo, noise, predicción, prediction, railway, ruido, vibraciones, vibrations
Scope
Adm. Estat
Plan
Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020
Resoluton year
2019
Funcding program
Programa Estatal de I+D+i Orientada a los Retos de la Sociedad
Funding call
Retos de Investigación: Proyectos de I+D+i
Grant institution
Agencia Estatal De Investigacion

Participants

Scientific and technological production

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