Seismic economic loss assessment of highway girder bridges using Wenchuan earthquake as a sample Online publication date: Fri, 26-Jan-2024
by Yanyan Fan; Haiyan Zhang; Ziqi Li
International Journal of Critical Infrastructures (IJCIS), Vol. 20, No. 1, 2024
Abstract: To study the seismic economic loss of highway girder bridges, taking 596 highway girder bridges in the Wenchuan earthquake as examples, the seismic damage phenomenon of highway girder bridges was statistically analysed, the vulnerability of highway girder bridges was studied and analysed, and the vulnerability matrix and vulnerability curve of highway girder bridges were obtained. Two seismic economic loss calculation models for highway girder bridges are proposed - the probability-based seismic economic loss assessment model and the loss rate-based seismic economic loss assessment model. Then, the seismic loss of highway girder bridges is predicted. The seismic loss prediction results cannot only provide a reference range for the bridge seismic design level, but the evaluation results can also be used as a reference for the seismic capacity of highway girder bridges and as the basis for measures for earthquake prevention and disaster reduction.
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