System identification of multistoreyed non-standard shear building using parametric state space modeling (pages 471–480)

摘要

The study presents a system identification technique for health monitoring of an existing shear building bynadopting parametric state space modeling. A ground plus eight-storeyed building with non-uniformndistribution of mass across floors (termed as non-standard) has been considered for the present study. Thenbuilding has been instrumented at a few selected floors with accelerometers. The identification techniquenrequires input excitation as well as output acceleration responses of the structure. Least square techniquenhas been utilized for the evaluation of the stiffness matrix, after having obtained the modal matrix for thenentire structure by adopting an iterative approach. The system identification approach has also been appliednto a numerically simulated model of the same building and the adequacy of the limited number of sensors innthe instrumented building has been verified. The system identification technique using parametric state spacenmodeling along with the iterative approach has been observed to be quite efficient in terms of evaluation ofnmodal and system parameters of existing structures. Copyright r 2010 John Wiley & Sons, Ltd.