A new approach to evaluate the effectiveness of rockfall barriers

Une nouvelle approche pour évaluer l'efficacité des filets pare-blocs

Mentani, A. ; Govoni, L. ; Gottardi, G. ; Lambert, S. ; Bourrier, F. ; Toe, D.

Type de document
Article de revue scientifique à comité de lecture
Langue
Anglais
Affiliation de l'auteur
UNIVERSITY OF BOLOGNA ITA ; UNIVERSITY OF BOLOGNA ITA ; UNIVERSITY OF BOLOGNA ITA ; IRSTEA GRENOBLE UR ETGR FRA ; IRSTEA GRENOBLE UR EMGR FRA ; IRSTEA GRENOBLE UR EMGR FRA
Année
2016
Résumé / Abstract
The paper addresses the response of a semi-rigid rockfall protection barrier using numerical models. The study show a large dependence of the barrier response to the impact conditions. The block size and impact position, rather than the velocity direction and magnitude induce different modes of failure of the fence, which in turn result in different values of failure energy. As a result, the barrier capacity cannot be established in a deterministic way. The effectiveness of structures as such can be more successfully evaluated through a reliability probabilistic approach. Results can be used to create a meta-model of the barrier response which can be incorporated into rockfall simulation models, enabling a reliable and comprehensive design of rockfall mitigation interventions performed with this type of structure.
Source
Procedia Engineering, vol. 158, p. 398 - 403

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