Modelling Geotechnical Seismic Isolation Systems through the Preisach Formalism

Pierfrancesco Cacciola, Alessandro Contento, Bruno Briseghella

Research output: Contribution to conferencePaperpeer-review

Abstract

Soil-structure interaction of structures protected by Geotechnical Seismic Isolation (GSI) system is investigated in this paper through a novel nonlinear approach. Preisach formalism is adopted to model the hysteretic behaviour of the soil through simplified nonlinear springs and dashpots. The efficiency of GSI versus natural soil is explored through extensive nonlinear numerical analyses on a benchmark structure. Comparisons with the currently adopted equivalent linear approach are also presented, highlighting the versatility of the proposed nonlinear model to reliably represent the nonlinear behaviour of the coupled structure-GSI system
Original languageEnglish
Number of pages12
Publication statusAccepted/In press - 4 Sept 2024
EventInternational Conference on Engineering Computational Technology - Czech Technical University, Prague, Czech Republic
Duration: 4 Sept 20246 Sept 2024
https://www.civil-comp.info/2024/ect/

Conference

ConferenceInternational Conference on Engineering Computational Technology
Abbreviated titleECT2024
Country/TerritoryCzech Republic
CityPrague
Period4/09/246/09/24
Internet address

Keywords

  • Geotechnical Seismic Isolation
  • Nonlinear soil-structure interaction
  • Preisach formalism

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