Geosynthetics April/May 2021 - 21

*	 The soil mass adjacent to the rock
imprinting results in compression,
while after a certain distance from
the first contact point, the acceleration applied to the soil mass produces an outward horizontal movement equivalent to a tensile force
being applied to the soil; at the limit
between the compressed and the
" tensioned " zone, cracks are formed;
the soil mass is therefore separated
into two parts. The tensile and pullout resistance of the reinforcement
can contribute to avoid the failure
due to outward displacement.
*	 Available full-scale tests, FEM and
DEM models clearly show that
geogrids are able to " guide " the
energy, so that the initial spherical

shape is soon converted into a horizontal cone; outward displacements
occur within this cone, leaving the
remainder of the soil mass in place.
*	 Available full-scale tests, FEM and
DEM models also show that the
stresses in the reinforcements have an
important component in the direction
parallel to the length of the embankment, beyond the compressed zone
at the upstream face: this justifies the
design assumption of also putting
geogrid layers in such direction.
*	 Both tests results and numerical
models confirm that geosynthetic
reinforcements are subject to high
tensile forces, in many cases almost
reaching the tensile resistance of the
reinforcement used. But the impulsive

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21


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Geosynthetics April/May 2021

Table of Contents for the Digital Edition of Geosynthetics April/May 2021

Geosynthetics April/May 2021 - Cover1
Geosynthetics April/May 2021 - Cover2
Geosynthetics April/May 2021 - 1
Geosynthetics April/May 2021 - 2
Geosynthetics April/May 2021 - 3
Geosynthetics April/May 2021 - 4
Geosynthetics April/May 2021 - 5
Geosynthetics April/May 2021 - 6
Geosynthetics April/May 2021 - 7
Geosynthetics April/May 2021 - 8
Geosynthetics April/May 2021 - 9
Geosynthetics April/May 2021 - 10
Geosynthetics April/May 2021 - 11
Geosynthetics April/May 2021 - 12
Geosynthetics April/May 2021 - 13
Geosynthetics April/May 2021 - 14
Geosynthetics April/May 2021 - 15
Geosynthetics April/May 2021 - 16
Geosynthetics April/May 2021 - 17
Geosynthetics April/May 2021 - 18
Geosynthetics April/May 2021 - 19
Geosynthetics April/May 2021 - 20
Geosynthetics April/May 2021 - 21
Geosynthetics April/May 2021 - 22
Geosynthetics April/May 2021 - 23
Geosynthetics April/May 2021 - 24
Geosynthetics April/May 2021 - 25
Geosynthetics April/May 2021 - 26
Geosynthetics April/May 2021 - 27
Geosynthetics April/May 2021 - 28
Geosynthetics April/May 2021 - 29
Geosynthetics April/May 2021 - 30
Geosynthetics April/May 2021 - 31
Geosynthetics April/May 2021 - 32
Geosynthetics April/May 2021 - 33
Geosynthetics April/May 2021 - 34
Geosynthetics April/May 2021 - 35
Geosynthetics April/May 2021 - 36
Geosynthetics April/May 2021 - 37
Geosynthetics April/May 2021 - 38
Geosynthetics April/May 2021 - 39
Geosynthetics April/May 2021 - 40
Geosynthetics April/May 2021 - 41
Geosynthetics April/May 2021 - 42
Geosynthetics April/May 2021 - 43
Geosynthetics April/May 2021 - 44
Geosynthetics April/May 2021 - Cover3
Geosynthetics April/May 2021 - Cover4
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