In order to locate the bridge damage in time and extend the service time of the structure,the damage identification method of the damage index with the curvature of the norm difference of flexibility matrix is studied.The formula of damage index is derived theoreti-cally,and then a finite element model of a simply-supported beam is established for numerical simulation to verify the effectiveness of the method.The results show that the method can identify the damage location in different scenarios.And under the influence of different levels of noise,the method still has a good performance,which can be performed in the practical engineering application.
damage detectionflexibility matrixnoisefinite element
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