A Frequency-Spatial Domain Decomposition ( FSDD ) Technique for Operational Modal Analysis

The development and theoretical background of a new operational modal identification technique, named as Frequency-spatial Domain Decomposition (FSDD) is described in this paper. Three applications in civil engineering structures for typical purposes, i.e. a. large-span stadium roof for verifying finite-element model, a highway bridge for damage detection and a long-span cable-stayed bridge for structural health monitoring, are presented.