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Non-linear behaviour of base-isolated building supported on flexible soil under damaging earthquakes

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Author

Summary, in English

Seismic isolation is a strategy to reduce damage of structures exposed to devastating earthquake excitations. Isolation systems, applied at the base of buildings, lower the fundamental frequency of the structure below the range of dominant frequencies of the ground motion as well as allow to dissipate more energy during structural vibrations. The effectiveness of the base-isolated buildings in damage reduction has been confirmed numerically for the models of structures with fixed supports. The aim of the present paper is to show the results of the non-linear analysis of the response of a base-isolated building supported on soft soil incorporating soil-structure interaction. The detailed study has been conducted for the building equipped with high damping rubber bearings used as isolation devices. The results of numerical simulations demonstrate that soil flexibility has a significant influence on the behaviour of isolated base of the structure. Considering the flexibility of soil significantly affects the rigid superstructure response lowering its potential to reduce structural damage.

Publishing year

2012

Language

English

Pages

142-145

Publication/Series

Advances in Fracture and Damage Mechanics X

Volume

488-489

Document type

Conference paper

Publisher

Trans Tech Publications

Topic

  • Mechanical Engineering

Keywords

  • Non-linear analysis
  • seismic isolation
  • structural damage
  • soil-structure interaction
  • earthquakes

Conference name

10th International Conference on Fracture and Damage Mechanics (FDM 2011)

Conference date

2011-09-19 - 2011-09-21

Conference place

Dubrovnik, Croatia

Status

Published

ISBN/ISSN/Other

  • ISSN: 1013-9826