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oai:recercat.cat:2117/3844742026-01-30T08:50:13Zcom_2072_1033col_2072_452950

Influence of foundations type on traffic-induced vibration assessment using an experimental/numerical hybrid methodology Soares, Paulo Alves Costa, Pedro Arcos Villamarín, Robert Godinho, Luis Universitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica Universitat Politècnica de Catalunya. CATMech - Centre Avançat de Tecnologies Mecàniques Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica::Vibracions mecàniques Railroad engineering Railroads -- Buildings and structures Railroads Structural dynamics Vibration Hybrid methodology Railway traffic Vibrations Enginyeria de ferrocarrils Ferrocarrils -- Edificis i estructures Ferrocarrils Dinàmica estructural Vibració Prediction of vibrations in buildings due to railway traffic is challenging due to several aspects, namely the huge dimensions of the domain, the interaction between different systems, and the uncertainties inherent to the complexity of the system. Therefore, experimental/numerical hybrid prediction techniques are of great interest since they take advantage of the combination between experimental data and numerical resources. In this context, the type of foundations of a building are preponderant in the dynamic soil-structure interaction effect and may have an influence on the accuracy of the hybrid prediction. The presence of the building foundations could significantly modify the response of the local sub-soil of the building. This fact makes that the prediction of vibrations in buildings becomes a complex wave propagation problem. As different types of foundations behave differently, they lead to different dynamic responses in the structure for a prescribed incident wave field. Therefore, dynamic soil-structure interaction coupling is also affected by the building’s foundation type. In order to investigate this phenomenon, this paper studies the influence that the consideration of three different foundation typologies, shallow, slab and deep foundations, have on the prediction of railway-induced vibrations on a building using an experimental/numerical hybrid methodology. A comparison is made between the results obtained through the hybrid method and the numerical results obtained through a numerical model based on the full system Postprint (author's final draft) 2022 Conference report Soares, P. [et al.]. Influence of foundations type on traffic-induced vibration assessment using an experimental/numerical hybrid methodology. A: International Conference on Wave Mechanics and Vibrations. "Recent trends in wave mechanics and vibrations: proceedings of WMVC 2022". Berlín: Springer, 2022, p. 317-326. ISBN 978-3-031-15758-5. DOI 10.1007/978-3-031-15758-5_31. 978-3-031-15758-5 https://hdl.handle.net/2117/384474 10.1007/978-3-031-15758-5_31 eng https://link.springer.com/chapter/10.1007/978-3-031-15758-5_31 Open Access 10 p. application/pdf Springer