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Numerical investigation on the dynamic response of rockfall impacts on flexible barrier under seismic loading

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  • Ziwei Ge

    (China University of Geosciences)

  • Hongyan Liu

    (China University of Geosciences)

Abstract

The rockfall triggered by earthquakes can cause severe infrastructure losses or even fatalities. The flexible barrier is an efficient rockfall protection system widely used against rockfall. Even though extensive studies have been carried out on the dynamic behavior of the flexible barrier, there is limited understanding of the dynamic response of the rockfall impacts on flexible barriers under seismic loading. This study aims to investigate the effect of seismic loading on the dynamic behavior of the flexible barrier. First, a numerical model is established to reproduce a field test of rockfall impacting the flexible barrier, and the validity of the numerical method can be verified. Moreover, the seismic loading is applied to the numerical model. The effect of the seismic wave direction, period, and amplitude on the dynamic response of the flexible barrier is analyzed. The numerical results reveal that the maximum elongation, normal stress, and shear stress increase under the seismic loading. The period and amplitude of the seismic wave have little effect on the dynamic response of the flexible barrier.

Suggested Citation

  • Ziwei Ge & Hongyan Liu, 2023. "Numerical investigation on the dynamic response of rockfall impacts on flexible barrier under seismic loading," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 115(2), pages 1213-1234, January.
    • Handle: RePEc:spr:nathaz:v:115:y:2023:i:2:d:10.1007_s11069-022-05591-6
    DOI: 10.1007/s11069-022-05591-6
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    References listed on IDEAS

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    1. Yuanyuan He & Lei Nie & Yan Lv & Hong Wang & Senfeng Jiang & Xiaohan Zhao, 2021. "The study of rockfall trajectory and kinetic energy distribution based on numerical simulations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 106(1), pages 213-233, March.
    2. Jingjin Yang & Suli Duan & Qinfeng Li & Chengqing Liu, 2019. "A review of flexible protection in rockfall protection," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 99(1), pages 71-89, October.
    3. Valerio De Biagi & Maria Lia Napoli & Monica Barbero, 2017. "A quantitative approach for the evaluation of rockfall risk on buildings," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 88(2), pages 1059-1086, September.
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