One of the current main challenges in Geotechnical and Structural Engineering is the analysis of the vertical component of site ground motion. In engineering practice, a simplified formulation of the Biot‘s equations is usually employed to model the coupled hydro-mechanical behaviour of saturated soils, namely the u–u formulation that neglects some terms of fluid inertial forces. This is in contrast with more refined formulations such as the u– u formulations that takes all inertial terms into account. The aim of this work is the validation of the u–u formulation as compared with the u–u formulation by means of numerical simulations, which are performed for different levels of permeability and different dynamic motions. The results are analysed in terms of frequency content and amplification rate, discussing the limits of applicability of the u–u formulation with respect to the u–u formulation.

Some considerations about vertical ground motions modelling in earthquake engineering / Argani, L. P.; Kowalczyk, P.. - ELETTRONICO. - (2019), pp. 1162-1169. ((Intervento presentato al convegno 7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 tenutosi a Roma nel 17-20 giugno 2019 [10.1201/9780429031274].

Some considerations about vertical ground motions modelling in earthquake engineering

Argani L. P.;Kowalczyk P.
2019

Abstract

One of the current main challenges in Geotechnical and Structural Engineering is the analysis of the vertical component of site ground motion. In engineering practice, a simplified formulation of the Biot‘s equations is usually employed to model the coupled hydro-mechanical behaviour of saturated soils, namely the u–u formulation that neglects some terms of fluid inertial forces. This is in contrast with more refined formulations such as the u– u formulations that takes all inertial terms into account. The aim of this work is the validation of the u–u formulation as compared with the u–u formulation by means of numerical simulations, which are performed for different levels of permeability and different dynamic motions. The results are analysed in terms of frequency content and amplification rate, discussing the limits of applicability of the u–u formulation with respect to the u–u formulation.
Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019
London
CRC Press/Balkema
9780429031274
Argani, L. P.; Kowalczyk, P.
Some considerations about vertical ground motions modelling in earthquake engineering / Argani, L. P.; Kowalczyk, P.. - ELETTRONICO. - (2019), pp. 1162-1169. ((Intervento presentato al convegno 7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 tenutosi a Roma nel 17-20 giugno 2019 [10.1201/9780429031274].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/281363
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