Variable stiffness smart structure systems to mitigate seismic induced building damages

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Proceedings titleProceedings, Annual Conference - Canadian Society for Civil Engineering
ConferenceAnnual Conference of the Canadian Society for Civil Engineering 2011, CSCE 2011, 14 June 2011 through 17 June 2011, Ottawa, ON
Pages677686; # of pages: 10
SubjectBuilding damage; Building structure; Earthquake events; Induced damage; Performance improvements; Performance indicators; Performance level; Retrofit techniques; Return periods; Seismic excitations; Seismic hazards; Smart spring; Smart structure system; Steel buildings; Variable stiffness; Variable stiffness devices; Benchmarking; Building codes; Buildings; Civil engineering; Hazards; Retrofitting; Stiffness; Seismology
AbstractUpgrading non-code conforming buildings to mitigate seismic induced damages is important in moderate to high seismic hazard regions. The damage, however, can be mitigated by using conventional (e.g. FRP wrapping) and emerging (e.g. smart structures) retrofit techniques. A model for the structure to be retrofitted should include relevant performance indicators. This paper proposes a variable stiffness smart structure device known as the Smart Spring to be integrated on building structures to mitigate seismic induced damage. The variable stiffness capability is of importance to structures that exhibit vertical (e.g. soft storey) irregularities and to meet different performance levels under seismic excitation. To demonstrate the utility of the new retrofitting technique, a four storey steel building is modeled in MATLAB and appropriate performance indicators are chosen. Various return period seismic hazards are generated from past earthquake event records to accurately predict the structure's performance. The performance improvement due to the retrofitting of building structures using the variable stiffness device is presented.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21271334
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Record identifier7306b6d0-303e-4ee8-a812-0f5e9c59f923
Record created2014-03-24
Record modified2016-05-09
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