We
present
the
outcomes
derived
from
controlled
laboratory
experiments
on
utilizing
gravel
rubber
mixtures
(GRM)
as
a
geotechnical
seismic
isolation
(GSI)
stratum
beneath
foundational
structure
of
EuroProteas
prototype.
The
study
encompassed
three
distinct
GRM
compositions
characterized
by
varying
proportions
relative
to
total
mixture
weight
(0%,
10%,
and
30%)
employed
foundation
soil.
These
GSI-structure
systems
were
subjected
external
harmonic
forces
applied
atop
across
broad
spectrum
frequencies
force
magnitudes.
Preceding
commencement
field
experiments,
resonant
column
cyclic
triaxial
compression
assessments
conducted
specimens
featuring
identical
fractions
mean
grain
size
ratios.
Our
tests
revealed
that
an
increase
in
content
resulted
reduction
shear
modulus
(G𝑜)
augmentation
damping
ratio
(D𝑜)
while
concurrently
inducing
more
linear
character
G/G𝑜-log𝛾-D
profiles.
findings
examinations
align
closely
with
those
ascertained
investigations.
Specifically,
it
was
confirmed
GSI
layer
thickness
0.50
meters,
composed
incorporating
30%
content,
exhibited
discernible
overall
stiffness
system,
accompanied
corresponding
alteration
its
fundamental
vibrational
frequency.
enhanced
within
system
manifested
through
observable
reductions
acceleration
recordings
diminished
strain
development
at
base
encompassing
wide
range
frequencies.
Sustainability,
Год журнала:
2023,
Номер
15(15), С. 11713 - 11713
Опубликована: Июль 28, 2023
Earthquake
early
warning
systems
(EEWS)
are
crucial
for
saving
lives
in
earthquake-prone
areas.
In
this
study,
we
explore
the
potential
of
IoT
and
cloud
infrastructure
realizing
a
sustainable
EEWS
that
is
capable
providing
to
people
coordinating
disaster
response
efforts.
To
achieve
goal,
provide
an
overview
fundamental
concepts
seismic
waves
associated
signal
processing.
We
then
present
detailed
discussion
IoT-enabled
EEWS,
including
use
networks
track
actions
taken
by
various
organizations
gather
data,
analyze
it,
send
alarms
when
necessary.
Furthermore,
taxonomy
emerging
approaches
using
facilities,
which
includes
integration
advanced
technologies
such
as
machine
learning
(ML)
algorithms,
distributed
computing,
edge
computing.
also
elaborate
on
generic
architecture
efficient
highlight
importance
considering
sustainability
design
systems.
Additionally,
discuss
role
drones
management
their
enhance
effectiveness
EEWS.
summary
primary
verification
validation
methods
required
under
consideration.
addition
contributions
mentioned
above,
study
highlights
implications
earthquake
detection
management.
Our
research
involved
comprehensive
survey
existing
literature
infrastructure.
conducted
thorough
analysis
facilities
findings
suggest
can
significantly
improve
speed
efforts,
thereby
reducing
economic
impact
earthquakes.
Finally,
identify
gaps
domain
future
directions
toward
achieving
Overall,
provides
valuable
insights
into
emphasizes
designing
Journal of Earthquake Engineering,
Год журнала:
2024,
Номер
28(9), С. 2422 - 2439
Опубликована: Фев. 12, 2024
This
paper
provides
new
and
useful
insights
into
the
performance
efficiency
of
geotechnical
seismic
isolation
(GSI)
systems
with
gravel-rubber
mixtures
containing
10%,
25%
40%
volumetric
rubber
content
(VRC).
Finite
element
numerical
models
were
developed
in
OpenSees
subjected
to
sinusoidal
ground
motions
varying
input
base
acceleration
frequency.
The
best
was
attained
for
VRC
=
at
a
frequency
8
Hz.
Using
newly
GSI
index,
energy
dissipation
found
vary
between
good
excellent,
while
that
10%
is
poor.
Australian Journal of Structural Engineering,
Год журнала:
2023,
Номер
24(4), С. 265 - 278
Опубликована: Июнь 29, 2023
Base
isolation
is
a
low-damage
seismic
design
strategy
that
can
be
used
for
constructing
resilient
structures.
Geotechnical
(GSI)
new
category
of
emerging
base
techniques
has
attracted
global
interest
in
the
past
decade.
Research
on
GSI
based
rubber-soil
mixtures
(RSM)
focused
structural
performance
under
earthquake
actions,
whilst
there
are
concerns
over
serviceability
limit
states
(SLS)
requirements
relation
to
(i)
human
comfort
strong
winds
and
(ii)
ground
settlement
gravity,
which
may
induce
cracking
durability
issues
This
article
presents
first
study
buildings
constructed
with
GSI-RSM
system.
The
finite
element
model
coupled
soil-foundation-structure
system
been
validated
by
data
recorded
from
geotechnical
centrifuge
testing.
numerical
estimates
have
also
compared
analytical
predictions.
It
concluded
satisfactorily
fulfill
SLS
requirements.
Soil Dynamics and Earthquake Engineering,
Год журнала:
2023,
Номер
172, С. 108033 - 108033
Опубликована: Май 16, 2023
Soil-rubber
mixtures
underneath
foundations
are
an
eco-sustainable
and
low-cost
Geotechnical
Seismic
Isolation
(GSI)
solution.
Using
rubber
grains
from
end-of-life
tyres
in
the
can
provide
a
modern
recycling
system
that
reduces
stockpile
of
scrap
worldwide.
In
recent
years,
gravel-rubber
(GRMs)
properties
have
been
investigated,
finding
good
behaviour
static
dynamic
conditions.
Laboratory
tests
on
GRMs
advantages
as
GSI
form
layer
underlying
foundation
structure
available
literature.
Nevertheless,
only
one
experimental
campaign
full-scale
prototype
resting
with
0%
30%
content
per
weight
was
performed
(SOFIA-SERA
Research
Programme).
This
paper
presents
3D
advanced
nonlinear
FEM
analyses
to
reproduce
furnish
new
results
about
above-mentioned
test.
The
calibration
parameters
different
constitutive
models
used
for
modelling
soil
supported
by
extensive
geotechnical
characterization.
developed
model
validated
test
terms
accelerations
velocities.
Then,
studied,
also
considering
shear
strains
versus
stresses
horizontal
vertical
displacements,
quantities
not
investigated
experimentally.
Finally,
axial
displacements.
highlights
fundamental
role
both
numerical
modelling,
invaluable
tools
coupled
seismic
soil-structure
systems,
including
innovative
materials,
such
GRMs,
main
using
GSI.
