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

Ziwei Ge and Hongyan Liu ()
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Ziwei Ge: China University of Geosciences
Hongyan Liu: China University of Geosciences

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2023, vol. 115, issue 2, No 10, 1213-1234

Abstract: 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.

Keywords: Rockfall; Flexible barrier; Seismic wave; Dynamic behavior; Numerical modeling (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s11069-022-05591-6

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