Affiliation:
1. Key Laboratory of Urban Safety Risk Monitoring and Early Warning, Ministry of Emergency Management, Shenzhen Technology Institute of Urban Public Safety, Shenzhen 518023, China
2. Shenzhen Key Laboratory of Urban Disasters Digital Twin, Shenzhen 518023, China
Abstract
In this paper, A high-order response surface method is proposed for finite element model updating of continuous beam bridges. Firstly, based on visual inspection and environmental vibration testing, the peak picking (PP) method and random subspace identification (SSI) method are used to identify the dynamic characteristic parameters of the structure. Then, the finite element model of the continuous beam bridge is updated based on the third-order response surface method. It can be concluded that the results of the updated finite element model are in good agreement with the test results, and the maximum error between the calculated and measured frequency is less than 3%, with MAC values greater than 85%. Moreover, the updated finite element model can reflect the current situation of real bridges and serve as the basis for bridge health monitoring, damage detection, and safety assessment.
Funder
National Natural Science Foundation of China
National Key Research and Development Program
Shenzhen Urban Public Safety and Technology Institute
Key Laboratory of Urban Safety Risk Monitoring and Early Warning
Ministry of Emergency Management
Shenzhen Science and Technology Program
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