Sustainability | Free Full-Text | Vibration-Based Seismic Damage States Evaluation for Regional Concrete Beam Bridges Using Random Forest Method

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Transportation networks play an necessary function in city areas, and bridges are probably the most weak buildings to earthquakes. The seismic harm analysis of bridges offers an efficient software to evaluate the potential harm, and guides the post-earthquake restoration operations. With the assistance of structural well being monitoring (SHM) methods, the structural situation could possibly be precisely evaluated by means of steady monitoring of structural responses, and evaluating vibration-based options, which may replicate the deterioration of supplies and boundary situations, and are extensively used to replicate the structural situations. This examine proposes a vibration-based seismic harm state analysis methodology for regional bridges. The proposed methodology incorporates the measured structural dynamic parameters and bridge configuration parameters. As well as, a number of depth measures are additionally included within the mannequin, to characterize the totally different traits and the regional variety of floor motions. The prediction fashions are skilled with a random forest algorithm, and their confusion matrices and receiver operation curves reveal a very good prediction efficiency, with over 90% accuracy. The numerous parameter identification of bridge programs and elements reveals the essential parameters for seismic design, catastrophe prevention and construction retrofit.
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