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ABC / PBES Research Update Waseem Dekelbab, PhD, PE, PMP Sr. Program Officer, TRB Accelerated Bridge Construction Prefabricated Bridge Elements & System.

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Presentation on theme: "ABC / PBES Research Update Waseem Dekelbab, PhD, PE, PMP Sr. Program Officer, TRB Accelerated Bridge Construction Prefabricated Bridge Elements & System."— Presentation transcript:

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

2 O UTLINE  FHWA/AASHTO/NCHRP International and Domestic Scan  FHWA Research Update  State Research Update  TRB Research Update  SHRP2  NCHRP

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

4 S CAN 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

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

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

7 Federal Highway Administration Research Update

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

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)

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

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

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

13 2009 NYSDOT UHPC J OINT C ONSTRUCTION Route 31 over Canandaigua Outlet

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

15 UHPC C OMPOSITE C ONNECTION Steel Girder ConnectionConcrete Girder Connection

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

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

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

19 D ESIGN AND C ONSTRUCTION  GRS-IBS Interim Implementation Guide  Design and Construction Guidance  Synthesis Report  Research and Background

20 State Research Update

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

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

23 NCHRP Research Projects Update

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

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

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

27 PCSSS Precast Inverted-T Cross Section NCHRP Web-Only Document 173: Cast-in- Place Concrete Connections for Precast Deck Systems

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

29 Longitudinal Joint Specimen Before and After Grouting NCHRP Web-Only Document 173: Cast-in- Place Concrete Connections for Precast Deck Systems

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

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

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

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

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

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

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

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

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

39 HTTP :// WWW. TRB. ORG /NCHRP


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