Deciphering seasonal bridge scour effects: a 1D sediment transport model study in India's tropical basin
Moumita Kundu,
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Arnab Ghosh,
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Manish Pandey
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et al.
Modeling Earth Systems and Environment,
Journal Year:
2024,
Volume and Issue:
11(1)
Published: Dec. 26, 2024
Language: Английский
Effects of Dynamical Change in Water Level on Local Scouring around Bridge Piers Based on In-Situ Experiments
Water,
Journal Year:
2021,
Volume and Issue:
13(21), P. 3015 - 3015
Published: Oct. 27, 2021
To
evaluate
the
stability
of
bridge
piers
affected
by
local
scouring,
existing
formulas
for
estimating
maximum
scour
depth
have
been
developed
based
on
results
experiments
conducted
under
a
constant
water
level.
However,
applicability
these
to
cases
where
level
rises
and
falls,
such
as
change
in
real
river,
is
not
clear.
In
this
study,
flow
were
cylindrical
oval
pier
models
investigate
effect
iterated
progression
around
piers.
Results
with
showed
that
length
increased
an
action
change;
however,
values
converged
after
number
actions
reached
certain
time.
The
at
upstream
was
approximately
1.8
times
larger
than
theoretical
value,
which
calculated
through
angle
repose
water.
important
parameter
defining
streambed
protection
zone,
one
measures
against
scour,
we
zone
needs
be
defined
more
widely.
Language: Английский
Model experiments on hydraulic properties around multiple piers with reproduced 3D geometries
Scientific Reports,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Nov. 19, 2022
The
effects
of
multiple
piers
with
3D
geometries
on
water
levels
during
floods,
as
well
riverbed
fluctuations
and
local
scour
after
floods
were
examined
via
hydraulic
model
experiments.
Kintaikyo
Bridge
in
Japan,
a
world-famous
historical
triple-wooden-arch
bridge,
was
modeled
at
scale
approximately
1/276.
number
set
to
four,
the
real
they
printed
installed
sand
layer
an
open
channel.
To
provide
adequate
information
pier
installation
conditions
response,
four
cases
studied
experiments,
primarily
considering
present
conditions;
previous
also
considered.
experimental
these
depended
whether
foundations
present,
skewed
against
flow
center,
shape
spindle
or
similar
that
case.
In
current
bridge
condition
where
are
there
is
no
skew,
level
rise,
fluctuation,
suppressed.
Furthermore,
statistical
analysis
results
suggested
more
stable
flooding.
two
had
smaller
areas
than
those
without.
Further,
generally
lower
mean
perimeters.
Regarding
without
foundations,
differences
due
angle.
addition,
representative
length
geometry
determined
by
dividing
projected
area
below
initial
surface
main
direction
height,
relationship
between
Froude
depth
maximum
investigated.
Language: Английский
STUDY OF PILLAR DIMENSION VARIATIONS MODELLING ON RIVER GEOMORPHOLOGY
Jurnal PenSil,
Journal Year:
2023,
Volume and Issue:
12(3), P. 304 - 313
Published: Sept. 29, 2023
The
behavior
of
river
flow
patterns
on
the
condition
pillar
dimensions
can
affect
geomorphology
conditions
river,
namely
unbalanced
local
scouring
between
sediment
transport
and
supply
so
that
it
will
strength
pillar.
This
study
aims
to
effect
scour
depth
channel
base
changes
in
area.
method
observation
was
carried
out
by
simulations
using
Nays2DH
with
same
parameters
for
each
test
dimension
discharge
(Q)
=
0.5
m3/s,
diameter
(D50)
0.35
mm,
width
(B)
5
m,
length
(L)
25
slope
(i)
0.005
drainage
time
(t)
7200
s.
simulation
results
show
basic
pattern
which
has
smallest
value,
diamond
type
Degradation
-
Basic
agitation
pillars,
showing
a
tends
be
evenly
distributed
compared
semi
rounded,
rectangle,
or
octagonal
types.
Period
s
downstream
pillar,
rounded
scours
change
<0.3
rectangle
<0.4
<0.2
m.
So
are
more
effective
reducing
scour.
Language: Английский