Due to the frequency-dependency of soil-foundation impedances, the dynamic interaction analysis of linear and nonlinear systems in time domain according to the sub-structure approach requires the defi-nition of suitable Lumped Parameter Models (LPMs) with frequency independent parameters to simulate the soil-foundation compliance. This paper investigates effects on the superstructure response resulting from the use of different LPMs. In particular, consistent and simpli-fied LPMs are considered and the linear response of single bridge piers founded on different pile foundations is studied. The effectiveness of selected LPMs is evaluated using results obtained from a direct ap-proach in the frequency domain as benchmark. Results demonstrate that simplified models can be sufficient in most cases to obtain a relia-ble prediction of the superstructure response.

Lumped Parameter Models for Time Domain Soil-Structure Interaction Analysis: Consistent vs Simplified Formulations and Effects on the Linear and Nonlinear Superstructure Response / González, Francisco; Morici, Michele; Carbonari, Sandro; Dezi, Francesca; Chiara Capatti, Maria; Leoni, Graziano; Padrón, Luis A.; Aznárez, Juan J.; Maeso, Orlando. - (2017). (Intervento presentato al convegno DISS_17 5th International Workshop on dynamic interaction of soil and structure tenutosi a Rome nel 19-20 October 2017).

Lumped Parameter Models for Time Domain Soil-Structure Interaction Analysis: Consistent vs Simplified Formulations and Effects on the Linear and Nonlinear Superstructure Response

Sandro Carbonari;
2017-01-01

Abstract

Due to the frequency-dependency of soil-foundation impedances, the dynamic interaction analysis of linear and nonlinear systems in time domain according to the sub-structure approach requires the defi-nition of suitable Lumped Parameter Models (LPMs) with frequency independent parameters to simulate the soil-foundation compliance. This paper investigates effects on the superstructure response resulting from the use of different LPMs. In particular, consistent and simpli-fied LPMs are considered and the linear response of single bridge piers founded on different pile foundations is studied. The effectiveness of selected LPMs is evaluated using results obtained from a direct ap-proach in the frequency domain as benchmark. Results demonstrate that simplified models can be sufficient in most cases to obtain a relia-ble prediction of the superstructure response.
2017
978-88-940114-3-2
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/258370
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