This paper examines the seismic response of reinforced concrete buildings founded on pile groups. The simplest approach to account for Soil-Foundation-Structure Interaction is represented by the equivalent linear oscillator, in which the foundation behaviour is ideal-ized by frequency dependent springs and dashpots. Such an approach is applied exten-sively to a case study of a 9-storey reinforced concrete building founded on piles. The seismic demand in the compliance model, expressed in terms of relative displacement, is then compared to that of the fixed base one. Finally, the prediction capability of the sim-plified procedure is validated against the approach based on the lumped parameters mod-els, or LPMs, in which the foundation behaviour is idealized by a single, visco-elastic ‘macro-element’ with additional fictitious masses. It is shown that the equivalent simple oscillator is capable to predict the importance of Soil-Foundation-Structure interaction, at least from a qualitative standpoint.

Seismic response of pile-supported buildings based on sfsi / de Sanctis, L.; Iovino, M.; Aversa, S.; Di Laora, R.; Franchin, P.; Noto, F.. - (2019), pp. 2010-2018. (Intervento presentato al convegno 7th International Conference on Earthquake Geotechnical Engineering tenutosi a Roma, Italia).

Seismic response of pile-supported buildings based on sfsi

Franchin, P.;
2019

Abstract

This paper examines the seismic response of reinforced concrete buildings founded on pile groups. The simplest approach to account for Soil-Foundation-Structure Interaction is represented by the equivalent linear oscillator, in which the foundation behaviour is ideal-ized by frequency dependent springs and dashpots. Such an approach is applied exten-sively to a case study of a 9-storey reinforced concrete building founded on piles. The seismic demand in the compliance model, expressed in terms of relative displacement, is then compared to that of the fixed base one. Finally, the prediction capability of the sim-plified procedure is validated against the approach based on the lumped parameters mod-els, or LPMs, in which the foundation behaviour is idealized by a single, visco-elastic ‘macro-element’ with additional fictitious masses. It is shown that the equivalent simple oscillator is capable to predict the importance of Soil-Foundation-Structure interaction, at least from a qualitative standpoint.
2019
7th International Conference on Earthquake Geotechnical Engineering
pile foundation, soil structure interaction, seismic risk
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Seismic response of pile-supported buildings based on sfsi / de Sanctis, L.; Iovino, M.; Aversa, S.; Di Laora, R.; Franchin, P.; Noto, F.. - (2019), pp. 2010-2018. (Intervento presentato al convegno 7th International Conference on Earthquake Geotechnical Engineering tenutosi a Roma, Italia).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1508638
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