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Structural health monitoring of HAN-30-0295 highway bridge
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Structural health monitoring of HAN-30-0295 highway bridge
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Structural health monitoring of HAN-30-0295 highway bridge
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Description
Title
Structural
health
monitoring
of
HAN-30-0295
highway
bridge
Subject
Structural
health
monitoring
;
Diaphragm
cracking
;
Prestressed
concrete
girders
;
TG305.R47
2008x
;
Concrete
beams--Testing.
;
Precast
concrete
construction--Evaluation.
;
Prestressed
concrete
bridges--Evaluation.
;
OTP
1.23/7:2008-10
Description
"
Prepared
in
cooperation
with the
Ohio
Department
of
Transportation
and the
U.S
.
Department
of
Transportation
,
Federal
Highway
Administration.
"; "
November
2008.
"; "
Report
No
.
FHWA/OH-2008/10.
";
Includes
bibliographical
references
(p
.
40).
;
Final
report.
;
Sponsored
by the
Ohio
Dept
. of
Transportation;
;
Harvested
from the
web
on
4/13/09
Creator
Reza
,
Farhad
.
Publisher
Ohio
Dept
. of
Transportation
,
Research
&
Development
;
Available
through
the
National
Technical
Information
Service
Contributors
Ohio
Northern
University
.
Dept
. of
Civil
Engineering.
;
Ohio
.
Dept
. of
Transportation
.
Office
of
Research
and
Development.
;
United
States
.
Federal
Highway
Administration
.
Type
Text
Language
eng
Relation
Also
available
online
from
ODOT's
Web
site
;
Adobe
Acrobat
Reader
required.
;
http://www.dot.state.oh.us/Divisions/Planning/Research/reportsandplans/Reports/2008/Structures/134329_Final_Report.pdf;
http://worldcat.org/oclc/318362871/viewonline
Description-Abstract
HAN-30-0295
(SFN
3201112)
Highway
Bridge
is
located
in
Hancock
County
,
approximately
4
miles
north
of
Ada
,
Ohio
. The
bridge
is
a
two-lane
highway
bridge
carrying
State
Route
OH-235
over
US-30
. The
superstructure
is
of a
deck-and-girder
type
consisting
of
five
precast
prestressed
concrete
I-girders
. The
bridge
consists
of
two
simple
spans
of
approximately
121-ft
,
made
continuous
at the
intermediate
pier
.
Cracking
of the
concrete
diaphragms
at the
intermediate
pier
location
was
observed
. The
primary
objective
of the
research
was to
assist
the
ODOT
District
One
Office
in
conducting
structural
health
monitoring
of the
HAN-30-0295
Bridge
.
Specifically
, the
objectives
were to:
(i)
Develop
an
understanding
of the
possible
causes
of the
problem
and the
mechanisms
at
work
;
(ii)
Conduct
temperature
differential
measurements
across
the
depth
of the
girders
;
(iii)
Conduct
a
diagnostic
load
test
using
a
dump
truck
while
monitoring
strains
in the
girders
to
obtain
information
on the
physical
behavior
of the
structure
including
continuity
for
live
loads
,
strength
of the
girders
,
fixity
at the
abutments
and
distribution
of the
live
load
;
(iv)
Develop
an
analytical
(finite
element)
model
of the
bridge
; and
(v)
Use
data
obtained
from
objectives
(iii)
and
(iv)
to
perform
load
rating
of the
structure
. The
net
effect
of
creep
and
shrinkage
can
lead
to
positive
moment
at the
pier
. In
addition
,
positive
temperature
gradients
can
create
positive
moment
at the
piers
.
Often
these
effects
are not
taken
into
account
explicitly
by the
designer
, as was the
case
in this
particular
bridge
. The
results
from this
study
show
that
temperature
effects
alone
could
create
a
moment
exceeding
1.2
Mcr
which
is
sufficient
to
cause
the
type
of
cracking
seen
. The
results
from the
diagnostic
load
test
show
that the
beams
in
service
have
higher
strength
than
designed
.
Results
also
indicate
that there
is
significant
continuity
developed
at the
abutments
which
lowers
the
maximum
positive
moment
induced
in the
beams
from
live
load
. The
recommendation
for the
studied
bridge
is
that
no
remedial
action
is
necessary
.
Recommendations
for
future
bridge
designs
are to
require
consideration
of
thermal
and
creep
and
shrinkage
effects
by
design
engineers
;
utilize
bond
breakers
between
girders
and
diaphragms
; and
delay
the
pouring
of the
deck
to
allow
for
more
differential
shrinkage
to
take
place
.
Date-Issued
[2008]
Format-Extent
ix
,
68
p
. :
ill
. ;
28
cm
.
Format-Medium
Government
Publication
OCLC number
318362871
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