An Experimental Comparison Of Half-scale
Rockfall Protection Sandwich Structures
Author(s)
A. Heymann, S. Lambert, E. Haza-Rozier, G. Vinceslas
& P. Gotteland
Abstract
Protection against falling rocks often requires the building of civil engineering
structures such as soil reinforced embankments. A recent development consists
of building a sandwich cellular structure for this purpose. Cellular structures are
efficient technological solutions widely used in civil engineering for various
applications. These structures also appear to be well suited to resist rockfall and
to act as protective structures against impacts. This paper investigates the
behaviour of three sandwich structures based on half-scale experiments. The
1.5 m high cellular sandwich structures were leaned against a concrete wall with
the facing made of geocells filled with a coarse granular material. Three different
granular materials were used for the kernel part of the sandwich (between the
facing and the wall). The experiments were carried out with dead load
\“pendular” impacts by a 260 kg spherical boulder with maximal impact energy
of 10 kJ. The aim was to evaluate the ability of each kernel material for reducing
the stress on the concrete wall.
Keywords: impact, gabion, scrapped tyres.
1 Introduction
Passive structural countermeasures against rockfall consist of structures placed in
the vicinity of the elements at risks in order to intercept or deflect the rocks
falling from slopes or cliffs. Among the possible structures, some are partly or
totally constructed from natural granular materials as for instance galleries
covered with cushion layers and embankments, the latter being appropriate for
Keywords
impact, gabion, scrapped tyres
Related Book
Other papers in this volume
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