Seismic response of base isolated structures with shape memory alloy damping devices

Krzysztof Wilde, Paolo Gardoni, Yozo Fujino

Research output: Contribution to journalConference articlepeer-review

Abstract

Base isolation provides a very effective passive method of protecting the structure from the hazards of earthquakes. The proposed smart isolation system combines the laminated rubber bearing with the device made of shape memory alloy (SMA). The constitutive law for superelastic material is extended to describe a hardening of the stress-strain relation of SMA at large strain levels. The smart base isolation utilizes the different responses of the SMA at different levels of strain to control the displacements of the rubber bearing at various excitation levels. At the same time the hysteresis of the alloy is used to increase the energy dissipation capacity. The performance of the smart base isolation is compared with the responses of laminated rubber bearing with and without lead core to quantified the benefits of applying SMA for isolation of three story building.

Original languageEnglish (US)
Pages (from-to)122-133
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3043
DOIs
StatePublished - May 23 1997
Externally publishedYes
EventSmart Structures and Materials 1997: Smart Systems for Bridges, Structures, and Highways - San Diego, United States
Duration: Mar 3 1997Mar 6 1997

Keywords

  • Base isolation
  • Buildings
  • Earthquake excitation
  • Shape memory alloys

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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