Identification System for Structural Health Monitoring in Buildings
A novel real time system identification method for structural health monitoring in a multi-story buildings is presented. The goal is to identify structural parameters in order to improve damage detection methods. Here, structural dynamics is modeled by means of a wave equation with Kelvin damping, that relates the stiffness loss with reduction of shear wave velocity propagation of seismic movements in structural elements. The identification system requires only acceleration signals and is based on the least squares method with forgetting factor. Moreover, a new parameterization is presented based on linear integral filters, which eliminates constant disturbances and attenuate measurement noise. The experimental results through an RC building, validate the feasibility of the proposed method.
KeywordsParameter estimation Linear integral filters Wave propagation Damage detection Structural health monitoring
This research was carried out with the support of UNAM-PAPIIT IN104218 grant.
- 2.Sohn, H., Farrar, C.R., Hemez, F.M., Shunk Devin, D., Stinemates Daniel, W., Nadler Brett, R., Czarnecki Jerry, J.: A review of structural health monitoring literature: 1996–2001. Los Alamos National Laboratory Report, LA-13976-MS, pp. 1–331 (2003)Google Scholar