Variable stiffness smart structure systems to mitigate seismic induced building damages

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Journal titleEarthquake Engineering and Structural Dynamics
Pages221237; # of pages: 17
SubjectBuilding damage; Building structure; Earthquake events; Induced damage; Performance improvements; Performance indicators; Performance level; Retrofit techniques; Return periods; Seismic excitations; Seismic hazards; Seismic Performance; Seismic retrofits; Semiactive control; Smart spring; Smart structure system; Steel buildings; Variable stiffness; Variable stiffness devices; Benchmarking; Buildings; Intelligent structures; Retrofitting; Seismic design; Stiffness; Earthquakes; building; earthquake damage; earthquake prediction; seismic design; seismic hazard; seismic retrofit; stiffness
AbstractUpgrading noncode conforming buildings to mitigate seismic induced damages is important in moderate to high seismic hazard regions. The damage, 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 proposed retrofitting technique, a four-storey steel building is modelled in MATLAB and appropriate performance indicators are chosen. Various return period seismic hazards are generated from past earthquake event records to predict the structure's performance. The performance improvement because of the retrofitting of building structures using the variable stiffness device is presented. © 2012 John Wiley & Sons, Ltd.
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AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21269727
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Record identifier76f46641-53de-44ed-a7c0-145558f2e9bf
Record created2013-12-13
Record modified2016-05-09
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