International Journal for Numerical and Analytical Methods in Geomechanics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 19, 2024
ABSTRACT
During
the
process
of
treating
soft
soil
foundations
with
prefabricated
drainage
drains
(PVD),
“soil
columns”
form
around
PVD,
and
a
“weak
zone”
forms
outside
range
columns.”
The
difference
in
properties
between
two
distinct
interface,
leading
to
gradual
decrease
efficiency
obstruction
vertical
channels,
which
turn
causes
cracks
lateral
displacement
during
consolidation.
interfaces
adjacent
layers
are
incomplete
contact,
water
within
interstices
impedes
transfer
heat,
manifesting
thermal
resistance
effect.
To
address
this
phenomenon,
synchronous
measurement
system
for
gradient
heat
flux
density
has
been
developed.
Applying
Fourier's
law
conduction,
coefficient
determined.
Based
on
theory
thermo‐hydro‐mechanical
coupling,
multi‐zone
axisymmetric
model
saturated
soils
that
considers
effect
proposed.
Semi‐analytical
solutions
were
derived
validated
through
comparison
custom
FEM
field
experiments.
consolidation
characteristics
under
various
contact
models
have
also
discussed,
comprehensive
analysis
influence
different
parameters.
Outcomes
show
that:
generalized
provides
better
description
phenomenon
interfaces;
ignoring
leads
an
overestimation
deformation
consolidation,
and,
decreases
thermo‐osmosis
characteristics.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 15
Published: June 3, 2024
The
pile-caisson
composite
structure
(PCCS)
is
an
innovative
underground
anchorage
foundation
used
to
support
large-span
suspension
bridges.
This
paper
presents
the
displacement
and
load
transfer
mechanism
of
PCCS.
bearing
responses
each
individual
pile
in
PCCS
were
analyzed
employing
finite
element
method,
which
was
verified
by
model
test
results.
peak
bending
moments
borne
P11
P53
exhibit
most
significant
disparity,
with
a
difference
that
can
reach
up
133.97%.
Moreover,
parametric
study
utilizing
numerical
simulations
indicates
augmenting
diameter
length,
while
reducing
spacing,
mitigate
displacements
However,
there
upper
limit
(i.e.
S
=
3.5d)
for
spacing
beyond
marginal
benefits
could
be
obtained.
findings
this
provide
guidance
design
construction
