Abstract
High energy absorption deformable barriers represent one of the most common measure against rock falls. In order to define the performances of these fences, manufacturers may test their structure in accordance with the European Technical Guideline ETAG 027. The guideline describes all the procedure to perform full-scale crash tests. Moreover, it defines the parameters that must be recorder during the test in order to characterize the fence in term of energy capacity, maximum elongation, residual height and efforts transmitted during the impact to the different anchoring systems (lateral bracing cable, up-slope bracing cable and post foundations). According to ETAG 027, the foundations are not part of the “tested kit”, so designers must verify these elements taking into account the soil properties of the site and the different national design codes available. Difficulties can rise for the post foundations. These elements must be built where strong machineries cannot operate and where the material is very difficult to be transported. In these scenarios, the post foundations can be more expensive than the fence, thus the solutions with rockfall barriers might be reject because the global solution is not cost-effective. The paper describes, in the detail, a case study where very light post foundations where adopted on a 5,000 kJ rockfall barrier. Although the fence was impacted by several blocks able to develop energies higher than the nominal capacity of the fence, the barrier and its foundation system perform properly and they were able to dissipate all the required energy.
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References
Azzoni A, La Barbera G, Zaninetti A (1995) Analysis and prediction or rockfalls using a mathematical model. Int J Rock Mech Min Sci 32:709–724
Brunet G, Giacchetti G, Grimod A (2013) Rockfall barrier behavior under multiple impact events. 64th highway geology symposium, New Hampshire, USA, 9–12 September 2013
EOTA (2008) ETAG 027: guideline for European technical approval of falling rock protection kits, Brussels. http://www.eota.be
Ferrero AM, Segalini A (2009) Rapporto di valutazione dell’efficienza delle barrier di protezione da collate di detrito-Colata di Pont (Pont di Valsavarenche, Ao). GeoDigital Solution Engineering Innovation. Internal Report University of Parma
Giacchetti G, Invernizzi M (2010) Barriere paramassi impattate con energia eccedente quella nominale: il caso di Arnad (AO), in Lavori Pubblici, No. 42 – Gennaio/Febbraio 2010 (in Italian)
Grimod A, Giacchetti G (2013) New design approach for rockfall barriers. EuRock 2013, Wroclaw, Poland, 23–26 September 2013
McClung DM, Schaerer PA (1993) The avalanche handbook. The Mountaineers, Seattle, WA
Peila D, Oggeri C, Baratono P (2006) Barriere paramassi a rete. Interventi e dimensionamento.GEAM, Quaderni di studio e di documentazione, n. 26 (in Italian)
Turner RPE, Turner JP, Duffy JD (2009) Post foundations for flexible rockfall fences. Proceedings 60th highway geology symposium, Buffalo, NY, September 29–October 2
UNI (2012) UNI 112111-4: 2012 rockfall protective measures – Part 4: definitive and executive design. Ente Nazionale Italiano di Unificazione, Milano Italia (in Italian). http://www.uni.com
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Giacchetti, G., Grimod, A. (2014). Effect of Large Impacts Against Rockfall Barriers. In: Sassa, K., Canuti, P., Yin, Y. (eds) Landslide Science for a Safer Geoenvironment. Springer, Cham. https://doi.org/10.1007/978-3-319-04996-0_15
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DOI: https://doi.org/10.1007/978-3-319-04996-0_15
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