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Development of a TL-3 deep beam tubular backup bridge rail : final report
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Development of a TL-3 deep beam tubular backup bridge rail : final report
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Development of a TL-3 deep beam tubular backup bridge rail : final report
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Description
Title
Development
of a
TL-3
deep
beam
tubular
backup
bridge
rail
:
final
report
Subject
TG326.D485
2010x
;
Bridge
railings--Design
and
construction.
;
Bridge
railings--Testing.
;
OTP
1.23/7:2010-18
Description
"
December
2010.
"; "
Report
476890-1.
"; "
State
Job
Number
:
134394"--Cover.
; "
FHWA/OH-2010/18--Technical
rept
.
documentation
p.
;
Includes
bibliographical
references
(p
.
51-52).
;
Final
report;
;
Sponsoring
agency
:
Ohio
Dept
. of
Transportation;
;
Harvested
from the
web
on
3/4/11
Publisher
Ohio
Dept
. of
Transportation
,
Office
of
Research
and
Development]
;
Available
through
the
National
Technical
Information
Service
Contributors
Abu-Odeh
,
Akram
Y.
;
Texas
Transportation
Institute.
;
Ohio
.
Dept
. of
Transportation.
;
United
States
.
Federal
Highway
Administration
.
Type
Text
Identifier
http://www.dot.state.oh.us/Divisions/TransSysDev/Research/reportsandplans/Reports/2011/Structures/134394-FR.pdf
Language
eng
Relation
http://worldcat.org/oclc/705370387/viewonline
Description-Abstract
The
objective
of this
study
is
to
investigate
the
performance
of the
Ohio
Department
of
Transportation
(ODOT)
Deep
Beam
bridge
rail
system
per
the
National
Cooperative
Highway
Research
Program
(NCHRP)
Report
350
TL-3
.
Analytical
study
,
computer
simulation
, and
testing
approach
are to be
addressed
to
accomplish
the
objective
of this
study
. The
final
expected
product
is
a
design
of the
ODOT
Deep
Beam
bridge
rail
system
with any
needed
retrofit
that will
bring
the
system
in
compliance
with the
NCHRP
Report
350
performance
criteria
per
TL-3
. The
modified
ODOT
Deep
Beam
bridge
rail
design
is
shown
to be
successfully
able
to
pass
NCHRP
Report
350
Test
Level
3
assessment
criteria
. This
conclusion
is
based
on
engineering
strength
analysis
and
nonlinear
finite
element
simulation
. The
added
rail
on the
top
of the
bridge
rail
helped
reduced
potential
vehicular
dynamics
instability
that
may
occur
if
only
the
original
rail
(less
height)
was
used
. Also, the
additional
lower
rail
(rub
rail)
provided
protection
against
tire
snagging
in the
opening
below
the
main
rail
and the
deck
. This
snagging
mode
could
be
detrimental
for
small
vehicle
impacts
due
to the
subsequent
excessive
deformation
and
increased
ridedown
acceleration
. This
system
can
be
implemented
in the
field
subsequent
to
Federal
Highway
Administration
(FHWA)
Office
of
Safety
approval
of the
simulation
results
presented
herein
or the
full
scale
crash
tests
that were
recommended
. The
modified
design
presented
herein
represents
a
retrofit
that
can
be
installed
by a
qualified
construction
crew
. The
research
team
recommends
using
the
ODOT
transition
GR-3.4
. A
modification
is
suggested
for that
transition
detail
to
accommodate
the
added
top
and
rub
rails
in the
modified
ODOT
Deep
Beam
bridge
rail
.
One
example
would be to
turn
the
top
rail
toward
the
middle
rail
at an
angle
and to
extend
the
rub
rail
along
a
few
transition
posts
and then
turn
it
back
toward
the
field
side
.
Date-Issued
[2010]
Format-Extent
xi
,
107
p
. :
ill
.
(some
col.)
,
plans
;
28
cm
.
Format-Medium
Government
Publication
Coverage-Temporal
May
2008-Oct
.
2010
.
OCLC number
705370387
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