Vulnerability and probabilistic seismic loss of highway tunnel considering two parameters

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (13) : 235-241.

SU Qi, FAN Jin

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Abstract

The research on the fragility analysis and probabilistic seismic economic loss of highway tunnel based on double intensity measures is significant for pre-earthquake earthquake prevention and post-earthquake emergency repair. In this paper, the evaluation framework of probabilistic seismic economic loss in the whole life cycle of highway tunnel is established, the double intensity measures are introduced, the fragility analysis is carried out by incremental dynamic analysis method. The comparison between the analytical fragility surface and the empirical fragility curve verifies the rationality of the model and the fragility surface established in this paper. On this basis, the probabilistic seismic economic losses in the whole life cycle of tunnel are evaluated. The results show that the fragility surface based on double intensity measures can reflect the structural damage more accurately, and the probabilistic economic loss caused by slight damage is the largest during the whole life cycle of highway tunnel, followed by moderate damage. The framework of tunnel probabilistic seismic economic loss assessment proposed in this paper can provide reference for highway tunnel seismic economic loss assessment.

Key words

highway tunnel / intensity measure / incremental dynamic analysis / fragility surface / probabilistic economic loss.

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SU Qi, FAN Jin. Vulnerability and probabilistic seismic loss of highway tunnel considering two parameters[J]. Journal of Vibration and Shock, 2023, 42(13): 235-241

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