Ben Graybeal, Ph.D., P.E. - Transportation.org · – Not covered in AASHTO/AWS D1.5 – AWS D1 TG7...
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Ben Graybeal, Ph.D., P.E. Team Leader – Bridge Engineering Research Federal Highway Administration 202-493-3122 [email protected] AASHTO SCOBS — June 2017
Transcript of Ben Graybeal, Ph.D., P.E. - Transportation.org · – Not covered in AASHTO/AWS D1.5 – AWS D1 TG7...
Ben Graybeal, Ph.D., P.E.Team Leader – Bridge Engineering Research
Federal Highway Administration202-493-3122
AASHTO SCOBS — June 2017
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
• Protection schemes required to resist ballistics, blast, fire, and cutting– Proprietary systems– Proven through full-scale qualification with
agreed upon acceptance criteria.– What should “acceptance” be?
Justin [email protected]
Contact:
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• Stronger, simpler, & more durable connections for PBE’s
• Good solution for complex rehabilitation challenges
Contact:
• Can we build a steel tubular bridge?– Not covered in AASHTO/AWS D1.5– AWS D1 TG7 working to marry AWS
D1.1 tubular provisions into D1.5.
Justin [email protected]
Contact:
• Toughness of tubes– Co-Op Agreement with
Lehigh looking at fracture toughness of tube corners.
– TFHRC looking at degradation of CVN toughness as function of bend radius.
www.cidect.com
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
• Investigate application of AR for construction inspection and review, QA, work zone review, training, and improved project management through real-time information in a real world environment.
• Document potential advantages, limitations, shortcomings, and cost of using AR
• Document methodologies used to store, retrieve, and archive big data information obtained through the use of AR.
• Document case studies of AR applicationHoda [email protected]
Contact:
Contact:
• FHWA-HRT-16-080• Best practices for field-
cast grout selection• Expected
performance
• FHWA-HRT-16-081• Important considerations• Test methods
• Suggestions for increasing bond strength
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
Near TermFocus AreasData Collection
Untreated Bridge Decks• Midatlantic – 2 clusters – 3 rounds of data• NW, SW, Gulf – 4 clusters – 1 round of data• Data collection to initiate nationally in 2017/2018
Data AccessBridge Portal • Standardize Updates
NBI/NBE/EnvironmentalLTBP Field Data
• Improve Accessibility• Maintain Functionality
Programmatic Support• Coordination, meetings, website,
publications• Bridge portal – maintain functionality, field
data upload• Data gap analyses – untreated/treated decks• Protocols – revisions, development
Redo overlay or replace deck?• Challenge: Overlay systems
extend the service life of bridge decks, but hide decks’ condition
• Goal: Identify promising nondestructive evaluation (NDE) technologies to evaluate condition of bridge decks with overlay– Is the corrosion of rebar getting
worse?– Is the deck deterioration area getting
larger?– Has the overlay interface debonded?– Has the overlay deteriorated?
NDE results with deteriorated areas in red
Various NDE techniques
Hoda [email protected]
Contact:
• Document state of sensors being deployed on UAV for bridge inspection;
• Assess the quality level of data needed for satisfactory inspection;
• Document types of performance information given to the owners;
• Provide guidance on how the collected data should be assessed, presented, and stored
• Create best practice guidelines.
Hoda [email protected]
Contact:
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
• Conduct seminars to disseminate the latest information on alternative corrosion resistant reinforcing bars (CRRB) available in the market place. Provide independent research findings for the performance of various CRRBs under aggressive environments exposure conditions.
• CRRB types :• Solid stainless• ASTM A1035 (micro-composite steel)• Stainless Clad• Galvanized• Epoxy coated • FRP composite
Waider Wong, [email protected]
Contact:
• International “Pooled Fund Program”
• ROI has been positive• SEACON is example…
• Seawater in concrete• FDOT: Halls River Bridge –
Contains minimal steel
David [email protected]
Contact:
Contact:
• Rehab deteriorated bridge decks
• Dozens of deployments in Europe
• 1st US deployment in 2016 (Iowa)
• 2nd US deployment coming in 2017 (Delaware)
• FHWA Report in Fall 2017(FHWA-HRT-17-096)
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
• Evaluate technologies for characterizing bridge foundations for unknown geometry, material properties, structural integrity, and load carrying capacity.
Frank [email protected](202) 493-3082
Contact:
• Main Applications: • Unknown Foundation• Foundation Reuse
SW View NE View
FCP Web Site: Search “FHWA FCP”
Jennifer [email protected]
Contact:
• Updated FHWA policy and guidance that supersedes the Interim Implementation Guide (2011)
• FHWA-HRT-17-080, under publication• Key changes:
• Material specifications• Main design chapter in LRFD format• Additional design examples• Recent research on scour countermeasures
Contact:
• Updated to include 150+ new load tests on large diameter open end piles; over 1500 load tests total
• Static, statnamic, and dynamic test data are available, along with subsurface information
• Future research to include the development of calibrated resistance factors
Jennifer [email protected]
• Structural Engineering• Construction• Bridge Inspection and Management• Bridge Preservation• Hydraulics and Geotech• Technology Deployment
Stakeholder-based model to identify and rapidly deploy proven innovations
• EDC-4 well underway• 11 initiatives• 3 well aligned with “bridge”
• Advanced Hydraulic Modeling Tools• UHPC for PBES• e-Construction
Ben Graybeal, Ph.D., P.E.Team Leader – Bridge Engineering Research
Federal Highway Administration202-493-3122
AASHTO SCOBS — June 2017
More Input = Better Research Focus = Better Results
