Mode Identifiability of a Multi-Span Cable-Stayed Bridge Utilizing Stochastic Subspace Identification
نویسندگان
چکیده
This study investigates the mode identifiability of a multi-span cable-stayed bridge in terms of a benchmark study utilizing stabilization diagrams of system model identified by means of the stochastic subspace identification (SSI). The cumulative contribution ratios (CCR) estimated from singular values of system model was also considered. Observations demonstrated that wind speed might influence to the mode identifiability of a specific mode of the cable-stayed bridge. Moreover the CCR estimated from the singular values of the system model showed that the time histories monitored during strong winds, such as typhoon, can be modeled with less system order than under weak winds.
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