Buildings,
Journal Year:
2024,
Volume and Issue:
14(10), P. 3197 - 3197
Published: Oct. 8, 2024
Based
on
the
deep
foundation
pit
project
of
TOD
(Transit-Oriented
Development)
complex
Shaoxing
North
High-speed
Railway
Station,
influence
different
construction
stages
deformation
and
inclination
rate
adjacent
elevated
bridge
its
variation
law
are
studied
through
field
measurement
numerical
simulation.
The
process
is
optimized
by
method
reinforcement
outside
adjustment
preloaded
axial
force,
distance
bridges
summarized.
results
show
that
with
excavation
pit,
pier
pile
gradually
increases,
piers
larger
than
foundations.
As
depth
soil
force
maximum
vertical
displacement
foundations
decreases.
deeper
reinforcement,
better
control
effect
bridge.
In
actual
construction,
it
recommended
be
taken
as
pit.
It
obvious
subject
to
angle
effect,
appropriate
value
should
selected
according
site
conditions.
generally
shows
a
decreasing
trend
increase
in
between
When
close
will
affected
fluctuation
decrease.
conclusions
drawn
article
can
serve
basis
reference
for
design
provide
similar
projects.
International Journal for Numerical and Analytical Methods in Geomechanics,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 8, 2025
ABSTRACT
The
impacts
of
different
types
methane
hydrates
(e.g.,
pore‐filling,
load‐bearing,
grain‐coating,
and
cementing
types)
on
the
mechanical
properties
hydrate‐bearing
sediments
(MHBS)
exhibit
significant
variations.
However,
quantitative
distinctions
remain
largely
unexplored.
Following
framework
classical
micromechanics‐based
model,
a
simplified
physical
model
regularly
arranged
particle
assembly
is
proposed
for
coexistent‐type
MHBS
(the
containing
two
or
more
hydrates)
to
derive
macroscopic
constitutive
relations,
strength
criteria,
corresponding
macro–micro
correlation
elastic
parameters.
obtained
theoretical
solutions
are
verified
by
comparison
with
indoor
test
results,
influence
environmental
factors
hydrate
saturation,
especially
hydrates,
under
various
initial
planar
void
ratios
investigated
in
detail.
results
show
that
there
differences
micromechanisms
affect
types.
Specifically,
load‐bearing
has
almost
no
contribution
improvement
modulus
peak
strength,
while
type
plays
dominant
role
MHBS,
grain‐coating
between
Advances in Civil Engineering,
Journal Year:
2025,
Volume and Issue:
2025(1)
Published: Jan. 1, 2025
Despite
extensive
research
on
slope
seepage
mechanisms,
a
reliable
long‐term
prediction
method
for
deformation
considering
rainfall
remains
undeveloped,
largely
due
to
the
complexity
of
rainfall‐induced
instability.
This
study
leverages
project
in
engineering
explore
under
heavy
using
intelligent
monitoring
techniques
and
genetic
algorithm
(GA)
optimization
neural
network
prediction.
By
analyzing
patterns
varied
intensities,
results
reveal
that
limited
has
minimal
impact
stability,
whereas
excessive
disrupts
internal
patterns,
increasing
pore
water
pressure
reducing
soil
shear
strength,
it
thereby
enhances
risk
instability
potential
landslides,
significantly
impacting
stability.
The
GA‐optimized
accurately
captures
abrupt
stages,
avoids
local
optima,
provides
viable
framework
early
warning
Frontiers in Earth Science,
Journal Year:
2025,
Volume and Issue:
13
Published: May 14, 2025
Temperature
is
a
key
factor
influencing
the
mechanical
behavior
of
static
interface
between
marine
silica
sand
(SS)
and
geogrid,
which
directly
impacts
stability
bearing
capacity
reinforced
soil
structures.
Despite
its
importance,
there
limited
research
on
temperature-dependent
properties
sand-geogrid
(SG)
interface.
To
address
this,
self-designed
temperature-controlled
large-scale
shear
apparatus
was
used
to
perform
series
tests
SG
interface,
utilizing
SS
particles
ranging
from
0.075
mm
2
testing
temperatures
−5°C
80°C.
The
results
revealed
non-linear
relationship
strength
temperature:
as
temperature
increased
40°C,
decreased,
then
rose
40°C
50°C,
before
declining
again
beyond
50°C.
sensitivity
variations
in
normal
stress
remained
low
at
both
high
temperatures.
Moreover,
friction
angle
cohesion
showed
fluctuations,
initially
decreasing,
increasing,
finally
again.
These
findings
underscore
complex
effects
mechanics
suggest
that
must
be
carefully
considered
evaluating
performance
structures
under
varying
environmental
conditions.
Buildings,
Journal Year:
2025,
Volume and Issue:
15(10), P. 1705 - 1705
Published: May 18, 2025
Deep-buried
soil
tunnels
in
weak
rock
strata
often
face
severe
risks,
such
as
collapse
and
large
deformation,
making
the
rational
selection
of
construction
methods
critical.
Using
a
tunnel
project
Baotai
District,
Yan’an
City
case
study,
this
research
compares
three-step
method,
temporary
inverted
arch
double-side
wall
pilot
CD
method.
By
combining
numerical
simulation
with
field
monitoring,
study
evaluates
surrounding
deformation
support
stress
characteristics.
Results
show
that
while
differences
among
are
small,
method
offers
optimal
control,
provides
best
distribution
meets
specification
requirements.
Notably,
only
shows
anchor
bolt
exceeding
design
limits.
Considering
safety,
efficiency,
cost,
is
recommended.
The
strong
agreement
between
monitoring
data
highlights
model’s
reliability
its
value
guiding
optimization.
