Transcript Dekelbab - Why PBES?

Accelerated Bridge Construction
Prefabricated Bridge Elements & System
P2P Exchange, Southeast Region
February 26-March 1, 2013
Norfolk, Virginia
ABC / PBES Research Update
Waseem Dekelbab, PhD, PE, PMP
Sr. Program Officer, TRB
O UTLINE
 FHWA/AASHTO/NCHRP
and Domestic Scan
 FHWA Research Update
 State Research Update
 TRB Research Update
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
SHRP2
NCHRP
International
FHWA/ AASHTO/ NCHRP 20-36:
P REFABRICATED B RIDGE E LEMENTS AND
S YSTEMS IN J APAN AND E UROPE (2004)
 Movement
System
 Superstructure
Systems
 Deck Systems
 Substructure Systems
S CAN 07-02 B EST P RACTICES
A CCELERATED C ONSTRUCTION
T ECHNIQUES (2008)
IN
Best practices highlighted
by the accelerated
construction scan include
success stories in the areas
of partnering, design,
planning, and contracting
strategies
4
B EST P RACTICES R EGARDING P ERFORMANCE OF
ABC C ONNECTIONS IN B RIDGES S UBJECTED T O
M ULTI -H AZARD AND E XTREME E VENTS (2012)
Scan 11-02: Summary of Initial Findings – 8 Topic
Areas:
1.
2.
3.
4.
Extreme load consideration for bridges
and ABC connections
ABC connection details
ABC connection maintenance
Standardization of ABC connection
details and processes
B EST P RACTICES R EGARDING P ERFORMANCE
OF ABC C ONNECTIONS IN B RIDGES S UBJECTED
T O M ULTI -H AZARD AND E XTREME E VENTS
ABC connection research
6. Innovative ABC connections
5.
7.
Monitoring ABC connections and
prefabricated bridge elements and
systems
8.
Other findings
Federal Highway Administration
Research Update
Federal Highway Administration
(FHWA) Research Related to ABC
Highways for LIFE demonstration projects:
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Precast segmental bridge bent system in
high seismic region of Washington State
FRP deck panels for movable bridges
County Project in NY this spring
ABC/PBES C ONNECTIONS
D R . B ENJAMIN G RAYBEAL
Address field-cast connection shortcomings by
recommending best practices based on
quantitative physical testing
 Wide ranging laboratory investigation
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Full-scale tests (box beams, deck-bulb-tees, etc.)
Subcomponent tests (deck panels, etc.)
Mechanical tests (cubes, prisms, etc.)
Durability tests (F/T, etc.)
Stability tests (shrinkage)
M ODULAR C OMPONENT
C ONNECTION R ESEARCH
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Focus on simple connections that use better “grouts”
Assess initial, service, and ultimate performance
Seven different materials are being compared for use in
connections
 High strength, low shrinkage grouts
 Epoxy grout
 UHPC
 Tendon grout
 Magnesium ammonium phosphate grout
 Typical deck concrete
L IGHTWEIGHT HPC S TRUCTURAL
P ERFORMANCE
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Focus on gap in density between LW and NW
Testing complete. Working with AASHTO SCOBS T-10
to compile state-of-knowledge then propose
specification revisions.
5 In-depth studies

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Transfer & development length for PC girders
Shear strength of PC girders
Development of mild steel reinforcement
Prestress losses
Materials characterization
U LTRA -H IGH P ERFORMANCE
C ONCRETE

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Provide new solutions to existing and anticipated
problems in our highway infrastructure
Strong DOT interest in UHPC for PBES connections
Ongoing Efforts:
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Assist State DOTs in UHPC deployment activities
Develop/test optimal PBES connection concepts
Develop QA/QC test methodology
Address Buy America requirements
2009 NYSDOT
UHPC J OINT C ONSTRUCTION
Route 31 over Canandaigua Outlet
I NCREASED S HEAR S TUD
S PACING FOR ABC
This project will determine if clustered stud
spacing at 12, 24, 36, and 48 inches produced
different static and fatigue behavior.
14
UHPC C OMPOSITE C ONNECTION
Steel Girder Connection
Concrete Girder Connection
LRFD FOR GRS, D R . J ENNIFER
N ICKS
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Update the resistance factors
for reinforcement strength and
vertical capacity of a GRS
composite mass.
Evaluate previous performance
test data and conduct new
performance tests on different
material
Evaluate the results of shake
table tests
Performing a reliability analysis
to develop LRFD
S YSTEMS D ESIGN M ETHODOLOGY FOR
A PPROACH /A BUTMENT /B ACKWALL
I NTEGRATION , M IKE A DAMS

Establish why a bridge built on a GRS-IBS can
be in-service for more than 5 years without
developing a pavement crack at the abutment
approach interface
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Define the mechanics of passive earth pressure
against a GRS approach
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Determine thermally induced
substructure/superstructure interaction
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Apply the result of this work to the design of
bridges on integral abutments
S EISMIC P ERFORMANCE OF GRS
WALLS AND A BUTMENTS , M IKE
A DAMS

The "no seismic analysis
option" just passed in
AASTHO for certain MSE
walls does not apply for
abutment applications
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Evaluate NCHRP and TPF
research to determine if
Section 11 should be
updated
D ESIGN AND C ONSTRUCTION
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GRS-IBS Interim
Implementation Guide
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Design and Construction
Guidance
Synthesis Report
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Research and Background
State Research Update
A CCELERATED B RIDGE
C ONSTRUCTION D ECISION &
E CONOMIC M ODELING T OOL

Compares ABC & conventional construction
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Helps analyze different alternatives &
determine which construction approach is
preferred for a specific bridge project
S TATE -S PONSORED ABC R ESEARCH
PARTIAL L ISTING

New York State DOT
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Washington State DOT
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Virginia Tech – full-depth deck panel research
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Virginia Center for Transportation Innovation
and Research (VCTIR) – 2011 Laboratory
Investigation of Lightweight Concrete Properties
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Texas DOT – 2001 Research Project on
Development of a Precast Bent Cap System
NCHRP Research Projects Update
NCHRP R EPORT 519: C ONNECTION B ETWEEN
S IMPLE -S PAN P RECAST C ONCRETE G IRDERS
M ADE C ONTINUOUS

Recommended details and
specifications for the
design of continuity
connections for precast
concrete girders
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Examples illustrating the
design of four precast
girder types made
continuous for live load
NCHRP R EPORT 584: F ULL -D EPTH ,
P RECAST-C ONCRETE B RIDGE D ECK PANEL
S YSTEMS
Recommended guidelines and
AASHTO LRFD Specifications
language for design,
fabrication, and construction
of full-depth, precastconcrete bridge deck panel
systems.
 Developed durable and
rapidly constructed
connections between panels

NCHRP P ROJECT 12-69: D ESIGN AND
C ONSTRUCTION G UIDELINES FOR L ONG -S PAN
D ECKED P RECAST, P RESTRESSED C ONCRETE
G IRDER B RIDGES
Provides guidelines for the design and construction
of decked precast, prestressed concrete girder
bridges
NCHRP Web-Only Document 173: Cast-inPlace Concrete Connections for Precast
Deck Systems
PCSSS Precast Inverted-T Cross Section
NCHRP Web-Only Document 173: Cast-inPlace Concrete Connections for Precast
Deck Systems
A Typical DBT Bridge Connected by Longitudinal
Joints with Welded Steel Connectors
NCHRP Web-Only Document 173: Cast-inPlace Concrete Connections for Precast
Deck Systems
Longitudinal Joint Specimen Before and After Grouting
NCHRP R EPORT 681: D EVELOPMENT OF
P RECAST B ENT C AP S YSTEMS FOR S EISMIC
R EGIONS
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Series of recommended updates to the:
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AASHTO LRFD Bridge Design Specifications
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Guide Specification for LRFD Seismic Bridge
Design
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AASHTO LRFD Bridge Construction
Specifications
In addition to:
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Design Flow Charts and Design Examples
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Example Connection Details
NCHRP R EPORT 681: D EVELOPMENT OF
P RECAST B ENT C AP S YSTEMS FOR S EISMIC
R EGIONS
N ON -I NTEGRAL , E MULATIVE : G ROUTED D UCT
NCHRP R EPORT 681: D EVELOPMENT OF
P RECAST B ENT C AP S YSTEMS FOR S EISMIC
R EGIONS
N ON -I NTEGRAL , E MULATIVE : C AP
P OCKET F ULL D UCTILITY
NCHRP R EPORT 681: D EVELOPMENT OF
P RECAST B ENT C AP S YSTEMS FOR S EISMIC
R EGIONS
N ON -I NTEGRAL , H YBRID : S TEEL S HELL
NCHRP R EPORT 681: D EVELOPMENT OF
P RECAST B ENT C AP S YSTEMS FOR S EISMIC
R EGIONS
N ON -I NTEGRAL , H YBRID : D UAL S TEEL
S HELL
NCHRP R EPORT 698: S YNTHESIS ON S YSTEM
P ERFORMANCE OF ABC C ONNECTIONS IN
M ODERATE - TO -H IGH S EISMIC R EGIONS
Detailed Evaluation of Connection Types:
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Bar Coupler Connections
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Grouted Duct Connections
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Pocket Connections
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Member Socket Connections
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Hybrid Connections
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Integral Connections
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Emerging Technology and Deformable Element
Connections
NCHRP FY 2013 R ESEARCH
P ROJECTS R ELATED TO ABC
NCHRP Project 12-96: Simplified FullDepth Precast Concrete Deck Panel Systems
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NCHRP Project 12-95: Design Guidelines
for Connection Details of Adjacent Precast
Concrete Box Beam Bridges
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NCHRP FY 2014 S UBMITTED
P ROBLEM S TATEMENT RELATED
ABC
TO
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Problem statement C-09: Guidelines for
Tolerances for Prefabricated Bridge Elements and
Systems
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Problem statement C-10: Guidelines for
Calculating Dynamic Effects in Large-Scale
Bridge Moves
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Problem statement C-22: Development of an
Accelerated Bridge Construction (ABC) Design
and Construction Guide Specification
ABC R ESEARCH N EEDS
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More validated options for connection
details, especially in high seismic regions
Acceptance criteria for grouted sleeve
connectors
Fatigue tests to ensure durability of castin-place deck joints
Crash testing of prefabricated barriers
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