Validation of numerical D.E.M. modelling of geogrid reinforced embankments for rockfall protection
Oggeri, C; Ronco, C; Vinai, R
Date: 31 December 2021
Article
Journal
Geoingegneria Ambientale e Mineraria
Publisher
Pàtron Editore
Publisher DOI
Abstract
The adoption of reinforced embankments for rockfall and landslide protection purposes is an effective
intervention for the reduction of risk and damages to civil facilities. These earth structures are manufactured with
layers of compacted soil alternated with geosynthetics (e.g. geogrids and geotextiles) that are anchored to the
outer ...
The adoption of reinforced embankments for rockfall and landslide protection purposes is an effective
intervention for the reduction of risk and damages to civil facilities. These earth structures are manufactured with
layers of compacted soil alternated with geosynthetics (e.g. geogrids and geotextiles) that are anchored to the
outer quarterdeck frame or wrapped around it. This paper discusses the results obtained with a numerical
simulation of the reinforced embankment carried out by means of a distinct element commercial (D.E.M.) code
as particle code (P.F.C.). Several types of rock impacts on an embankment were simulated, varying block
speeds, energies and geometrical impact conditions. Data from practical experiences of the authors and data from
full-scale impact tests gathered from relevant literature, were used for the validation of the model. The main
result of the work is the development of design operative suggestions that can support the selection of the design
parameters of an embankment for rockfall protection purposes: its preliminary size based on impact energy level
and induced damages can be outlined. The results of this provide guidance to designers and relevant stakeholders
in the evaluation of risk scenarios arising from potential rock falls on infrastructures.
Engineering
Faculty of Environment, Science and Economy
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