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

被引：3

作者：

Gaviria, Carlos A. ^{[1
]}

Montejo, Luis A. ^{[2
]}

机构：

[1] Univ Militar Nueva Granada, Fac Estudios Distancia, Civil Engn Program, Granada, Colombia

[2] Univ Puerto Rico Mayaguez, Dept Engn Sci & Mat, Mayaguez, PR USA

来源：

STRUCTURAL MONITORING AND MAINTENANCE | 2021年 / 8卷 / 02期

基金：

美国国家科学基金会;

关键词：

health monitoring; kalman filter; reinforced concrete; earthquake; multiple degree of freedom; openSees; REINFORCED-CONCRETE STRUCTURES; ONLINE DAMAGE DETECTION; IDENTIFICATION; MODEL; FREQUENCY; SYSTEMS; FORCE;

D O I：

10.12989/smm.2021.8.2.167

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An improved unscented Kalman filter approach is implemented to estimate induced displacements and changes in structural properties (stiffness, frequencies and damping) during the forced dynamic response of 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 inelastic demand on the structure. The variation of the dynamic properties is successfully estimated by iterative updating the filter parameters. The estimated peak values of stiffness and damping reached during the seismic excitation agree with peak inelastic demand values and seem appropriate for detection and damage diagnosis of RC structures.

引用

页码：167 / 186

页数：20