Mathematics,
Journal Year:
2023,
Volume and Issue:
11(16), P. 3480 - 3480
Published: Aug. 11, 2023
The
evaluation
of
the
bearing
capacity
strip
footings
generally
assumes
that
soil
is
either
dry
or
fully
saturated,
which
contradicts
actual
condition
in
nature
where
often
a
partially
saturated
state.
Furthermore,
infiltration
has
significant
impact
on
shear
strength
soil.
Following
upper
bound
theory
limit
analysis,
this
article
provides
theoretical
framework
for
assessing
under
transient
flow
with
linear
variation
intensity
first
time.
Firstly,
closed
form
suction
stress
derived
using
Laplace
transform
and
introduced
into
Mohr–Coulomb
criterion.
A
discrete
failure
mechanism
fewer
variables
higher
accuracy
provided
to
ensure
kinematic
admissibility.
solution
obtained
by
solving
power
balance
equation.
present
results
are
compared
from
published
literature
finite
element,
confirming
validity
superiority
provided.
parametric
analysis
also
conducted
three
hypothetical
types
(fine
sand,
silt,
clay),
show
unsaturated
positive
influence
increasing
foundation
capacity.
magnitude
comprehensively
controlled
factors
such
as
type,
hydraulic
conductivity,
intensity,
time,
water
table
depth.
increase
due
can
be
incorporated
Terzaghi’s
equation
separate
component
presented
tabular
engineering
design
purposes.
Geosynthetics International,
Journal Year:
2023,
Volume and Issue:
31(5), P. 568 - 596
Published: June 19, 2023
In
this
study,
the
ultimate
bearing
capacity
of
shallow
strip
footings
resting
on
a
geosynthetic-reinforced
soil
mass
subjected
to
inclined
and
eccentric
combined
loading
is
rigorously
examined
through
well-established
method
lower
bound
limit
analysis
(LA)
in
conjunction
with
finite
element
(FE)
second-order
cone
programming
(SOCP).
Lower
formulation
modified
consider
tensile
force
geosynthetic
layer
so
as
account
for
both
pullout
(sliding)
rupture
(structural)
modes
reinforcement
failure.
The
effects
several
parameters,
including
embedment
depth
(u)
strength
(T
u
)
along
load
inclination
angle
(α)
eccentricity
(e),
ratio
(BCR)
failure
envelopes
overlying
foundation
are
discussed.
results
generally
show
marked
increase
surface
footing
against
inclusion
single
layer.
Results
also
reveal
that
second
intermediate
might
be
required
bear
dual
performance
vertical
concentric
scenarios
more
effectively
support
footing.
SOILS AND FOUNDATIONS,
Journal Year:
2024,
Volume and Issue:
64(3), P. 101479 - 101479
Published: June 1, 2024
This
study
aims
to
explore
the
significant
impact
of
soil
fabric
anisotropy
on
ultimate
bearing
capacity
eccentrically
and
obliquely
loaded
shallow
foundations
overlying
a
geosynthetic-reinforced
granular
deposit.
For
this
purpose,
well-established
lower
bound
theorems
limit
analysis
(LA)
in
conjunction
with
finite
elements
(FE)
formulations
second-order
cone
programming
(SOCP)
are
exploited
perform
estimations.
The
consideration
mass's
inherently
anisotropic
response
layer
involves
utilization
distinct
internal
friction
angles
various
directions.
FELA
framework
adopted
incorporates
both
pull-out
tensile
mechanisms
failure
reinforcement
layer.
marked
contribution
inherent
impacts
strength
(Tu)
embedment
depth
(u)
geosynthetic
mechanism,
ratio
(BCR),
envelope
obliquely/eccentrically
strip
footing
is
rigorously
examined
discussed.
It
generally
concluded
that
for
given
depth,
envelopes
surface
V-H
V-M
planes
shrink
appreciably
increase
as
well
decrease
strength.
Moreover,
influence
overall
more
evident
case
using
strong
compared
weak
geosynthetic.
findings
investigation
demonstrate
overlooking
behaviour
numerical
would
give
rise
undesirable
non-conservative
precarious
designs.
International Journal of Geomechanics,
Journal Year:
2023,
Volume and Issue:
23(6)
Published: March 21, 2023
The
paper
aims
to
evaluate
the
pseudostatic
seismic
bearing
capacity
of
shallow
foundations
on
geosynthetic-reinforced
granular
soil
subjected
inclined/eccentric
combined
loading.
This
is
achieved
through
a
comprehensive
set
lower-bound
finite-element
limit
analysis
(LB
FELA)
simulations
adopting
second-order
cone
programming.
loading
incorporated
into
element
equilibrium
equations
as
body
forces.
Both
sliding
and
structural
modes
geosynthetic
failure
are
simulated
within
FELA
framework.
influences
acceleration,
embedment
depth
(u),
ultimate
tensile
strength
(Tu)
reinforcement
layer
mechanism,
ratio,
envelope
overlying
obliquely/eccentrically
loaded
foundation
thoroughly
investigated
discussed.
It
generally
concluded
that
at
given
depth,
envelopes
shrink
substantially
with
increase
horizontal
acceleration
reduction
strength.
