Transcript of ABC / PBES Research Update Waseem Dekelbab, PhD, PE, PMP Sr. Program Officer, TRB Accelerated Bridge...
- Slide 1
- ABC / PBES Research Update Waseem Dekelbab, PhD, PE, PMP Sr.
Program Officer, TRB Accelerated Bridge Construction Prefabricated
Bridge Elements & System P2P Exchange, Southeast Region
February 26-March 1, 2013 Norfolk, Virginia
- Slide 2
- O UTLINE FHWA/AASHTO/NCHRP International and Domestic Scan FHWA
Research Update State Research Update TRB Research Update SHRP2
NCHRP
- Slide 3
- 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
- Slide 4
- S CAN 07-02 B EST P RACTICES IN A CCELERATED C ONSTRUCTION T
ECHNIQUES (2008) Best practices highlighted by the accelerated
construction scan include success stories in the areas of
partnering, design, planning, and contracting strategies 4
- Slide 5
- 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. Extreme
load consideration for bridges and ABC connections 2. ABC
connection details 3. ABC connection maintenance 4. Standardization
of ABC connection details and processes
- Slide 6
- 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 5. ABC
connection research 6. Innovative ABC connections 7. Monitoring ABC
connections and prefabricated bridge elements and systems 8. Other
findings
- Slide 7
- Federal Highway Administration Research Update
- Slide 8
- Federal Highway Administration (FHWA) Research Related to ABC
Highways for LIFE demonstration projects: Precast segmental bridge
bent system in high seismic region of Washington State FRP deck
panels for movable bridges County Project in NY this spring
- Slide 9
- 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 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)
- Slide 10
- M ODULAR C OMPONENT C ONNECTION R ESEARCH 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
- Slide 11
- L IGHTWEIGHT HPC S TRUCTURAL P ERFORMANCE 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 Transfer & development length for
PC girders Shear strength of PC girders Development of mild steel
reinforcement Prestress losses Materials characterization
- Slide 12
- U LTRA -H IGH P ERFORMANCE C ONCRETE Provide new solutions to
existing and anticipated problems in our highway infrastructure
Strong DOT interest in UHPC for PBES connections Ongoing Efforts:
Assist State DOTs in UHPC deployment activities Develop/test
optimal PBES connection concepts Develop QA/QC test methodology
Address Buy America requirements
- Slide 13
- 2009 NYSDOT UHPC J OINT C ONSTRUCTION Route 31 over Canandaigua
Outlet
- Slide 14
- 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
- Slide 15
- UHPC C OMPOSITE C ONNECTION Steel Girder ConnectionConcrete
Girder Connection
- Slide 16
- LRFD FOR GRS, D R. J ENNIFER N ICKS 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
- Slide 17
- 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
Define the mechanics of passive earth pressure against a GRS
approach Determine thermally induced substructure/superstructure
interaction Apply the result of this work to the design of bridges
on integral abutments
- Slide 18
- S EISMIC P ERFORMANCE OF GRS W ALLS 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 Evaluate
NCHRP and TPF research to determine if Section 11 should be
updated
- Slide 19
- D ESIGN AND C ONSTRUCTION GRS-IBS Interim Implementation Guide
Design and Construction Guidance Synthesis Report Research and
Background
- Slide 20
- State Research Update
- Slide 21
- A CCELERATED B RIDGE C ONSTRUCTION D ECISION & E CONOMIC M
ODELING T OOL Compares ABC & conventional construction Helps
analyze different alternatives & determine which construction
approach is preferred for a specific bridge project 21
- Slide 22
- S TATE -S PONSORED ABC R ESEARCH P ARTIAL L ISTING New York
State DOT Washington State DOT Virginia Tech full-depth deck panel
research Virginia Center for Transportation Innovation and Research
(VCTIR) 2011 Laboratory Investigation of Lightweight Concrete
Properties Texas DOT 2001 Research Project on Development of a
Precast Bent Cap System
- Slide 23
- NCHRP Research Projects Update
- Slide 24
- 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 Examples illustrating the design of four precast
girder types made continuous for live load
- Slide 25
- NCHRP R EPORT 584: F ULL -D EPTH, P RECAST -C ONCRETE B RIDGE D
ECK P ANEL S YSTEMS Recommended guidelines and AASHTO LRFD
Specifications language for design, fabrication, and construction
of full-depth, precast- concrete bridge deck panel systems.
Developed durable and rapidly constructed connections between
panels
- Slide 26
- 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
- Slide 27
- PCSSS Precast Inverted-T Cross Section NCHRP Web-Only Document
173: Cast-in- Place Concrete Connections for Precast Deck
Systems
- Slide 28
- A Typical DBT Bridge Connected by Longitudinal Joints with
Welded Steel Connectors NCHRP Web-Only Document 173: Cast-in- Place
Concrete Connections for Precast Deck Systems
- Slide 29
- Longitudinal Joint Specimen Before and After Grouting NCHRP
Web-Only Document 173: Cast-in- Place Concrete Connections for
Precast Deck Systems
- Slide 30
- NCHRP R EPORT 681: D EVELOPMENT OF P RECAST B ENT C AP S YSTEMS
FOR S EISMIC R EGIONS Series of recommended updates to the: AASHTO
LRFD Bridge Design Specifications Guide Specification for LRFD
Seismic Bridge Design AASHTO LRFD Bridge Construction
Specifications In addition to: Design Flow Charts and Design
Examples Example Connection Details
- Slide 31
- 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
- Slide 32
- 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
- Slide 33
- 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
- Slide 34
- N ON -I NTEGRAL, H YBRID : D UAL S TEEL S HELL NCHRP R EPORT
681: D EVELOPMENT OF P RECAST B ENT C AP S YSTEMS FOR S EISMIC R
EGIONS
- Slide 35
- 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: Bar Coupler Connections Grouted
Duct Connections Pocket Connections Member Socket Connections
Hybrid Connections Integral Connections Emerging Technology and
Deformable Element Connections
- Slide 36
- NCHRP FY 2013 R ESEARCH P ROJECTS R ELATED TO ABC NCHRP Project
12-96: Simplified Full- Depth Precast Concrete Deck Panel Systems
NCHRP Project 12-95: Design Guidelines for Connection Details of
Adjacent Precast Concrete Box Beam Bridges
- Slide 37
- NCHRP FY 2014 S UBMITTED P ROBLEM S TATEMENT RELATED TO ABC
Problem statement C-09: Guidelines for Tolerances for Prefabricated
Bridge Elements and Systems Problem statement C-10: Guidelines for
Calculating Dynamic Effects in Large-Scale Bridge Moves Problem
statement C-22: Development of an Accelerated Bridge Construction
(ABC) Design and Construction Guide Specification
- Slide 38
- ABC R ESEARCH ABC R ESEARCH N EEDS More validated options for
connection details, especially in high seismic regions Acceptance
criteria for grouted sleeve connectors Fatigue tests to ensure
durability of cast- in-place deck joints Crash testing of
prefabricated barriers
- Slide 39
- HTTP :// WWW. TRB. ORG /NCHRP