Buildings,
Journal Year:
2024,
Volume and Issue:
14(6), P. 1833 - 1833
Published: June 17, 2024
It
is
essential
and
convenient
to
use
accurate
validated
numerical
models
simulate
the
seismic
performance
of
post-tensioned
(PT)
rocking
bridge
piers,
with
a
particular
emphasis
on
accurately
capturing
behavior.
The
primary
contribution
this
study
comparison
effectiveness
four
commonly
used
base
(namely,
lumped
plasticity
(LP)
model
multi-contact
spring
(MCS)
linear
elastic
(MCS-LE),
bilinear
elastic–plastic
(MCS-EP)
nonlinear
plastic
(MCS-NP)
material
behavior,
respectively)
in
modeling
both
cyclic
responses
PT
piers.
Also,
validates
3D
contact
stiffness
equation
for
assesses
differences
between
dynamic
static
values
springs.
Both
quasi-static
shaking
table
tests
typical
piers
are
adopted
calibrate/validate
these
models.
These
describing
piers’
formulated
calibrated,
showing
good
agreement
test
results
specimens.
Additionally,
suggested
analyses
identified
by
parametric
analysis.
All
can
predict
pier’s
behavior
after
calibration
values.
recommended
analysis
smaller
than
that
findings
provide
valuable
reference
solution
simulation
Advances in Bridge Engineering,
Journal Year:
2024,
Volume and Issue:
5(1)
Published: April 17, 2024
Abstract
Cofferdam
is
widely
employed
in
the
construction
of
underwater
bridge
foundations.
Its
crucial
attribute
lies
providing
a
dedicated
platform
for
activities
and
enhancing
water
resistance
dimensions
structural
design,
consequently
amplifying
local
scour.
However,
previous
research
on
scour
has
seldom
investigated
effect
facilities
life
cycle
development
This
gap
led
to
misunderstanding
protective
strategies
against
throughout
period.
In
this
paper,
experiment
was
implemented
with
unidirectional
flume.
Physical
model
experiments
were
conducted
scrutinize
impact
anti-scour
rib
structures
The
experimentally
determined
depth
compared
assess
performance
protection
system.
Oblique
photogrammetry
subsequently
used
capture
morphology
equilibrium
pit
experiments.
associated
topographical
data
imported
into
Fluent
commercial
fluid
software
in-depth
flow
field
analysis.
A
numerical
flume
established
examine
hydraulic
characteristics
under
two
distinct
conditions:
smooth
riverbed
during
initial
stage
scoured
at
To
further
determine
mechanism
protection,
influence
shear
stress
numerically.
Analyses
revealed
that
incorporating
ribs
cofferdam
alters
characteristics,
hindering
downward
movement
subsurface
beneath
structure,
reducing
bed
stress,
mitigating
effects.
instantaneous
strengthens
as
topography
develops.
effectiveness
mainly
influenced
by
length,
spacing,
shape.
