Unscented Kalman filter approach for tracking physical and dynamic properties of structures: Validation for multi-story buildings under seismic excitation


== Abstract ==

<div><span style="font-size: 10.24px;">An improved unscented Kalman filter approach is implemented to estimate induced displacements and&nbsp;changes in structural properties (stiffness, frequencies and damping) during the forced dynamic response of&nbsp;multistory buildings to seismic excitations. The methodology is validated using a fiber-based nonlinear model of a 4-story 4-bays reinforced concrete (RC) frame building subjected to a set of earthquakes causing different levels of&nbsp;inelastic demand on the structure. The variation of the dynamic properties is successfully estimated by iterative&nbsp;updating the filter parameters. The estimated peak values of stiffness and damping reached during the seismic&nbsp;excitation agree with peak inelastic demand values and seem appropriate for detection and damage diagnosis of RC&nbsp;structures.</span></div>



== Document ==
<pdf>Media:Draft_Gaviria_468642223-8099-document.pdf</pdf>