georgia’s rapid replacement utilizing full-depth …...mar 16, 2017 · georgia’s rapid...
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GEORGIA’S RAPID REPLACEMENT UTILIZING FULL-DEPTH
PRECAST DECK PANELS WITH UHPC CLOSURE JOINTS
SR 211 OVER BEECH CREEK
Bill DuVall, P.E. and Dexter Whaley, P.E.Georgia Department of Transportation
Office of Bridge Design
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• SR 211 / Beech Creek
• Rapid Deck Replacement
• Rapid Span Replacement
• Use of Precast Elements
• Ongoing and Future Work
ABC TECHNIQUES IN GEORGIA
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RAPID DECK REPLACEMENT
I-285 over Cobb
Parkway
I-285 over Buford
Highway
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EXODERMIC DECK PANELS
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RAPID SPAN REPLACEMENT
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RAPID SPAN REPLACEMENT
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PRECAST BRIDGE ELEMENTS
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PRECAST SUBSTRUCTURE
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SPMT
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SR 211 / BEECH CREEK
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• 148’ Single Span Bridge
• 40’ Gutter to Gutter
• Ultra High Performance Concrete (UHPC) for Joint Connections
• Full Depth Precast Deck Panels
• 60 Day Road Closure
PROJECT OVERVIEW
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DEMOLITION
• Clearing & Grubbing• Work Bridge• Demolition – June 1st
• 4 Days
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END BENTS
• HP 14 x 102 Piles• 3500 psi 24hr Accelerated Concrete• Cast In Place• 7 Days
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BEAMS
• 72” Bulb Tees• 10,000 psi Concrete• Steel Diaphragms• 2 Days
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FULL DEPTH PRECAST PANELS
• 4500 psi Concrete• 8 ¾” Depth• #5 Bars
• 6” T&B, Trans• 12”/6” T&B, Long
• 8’/9’ x 21’-5”
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JOINTS
• 2” Joint Top Opening• 5” Bar Lap• Why UHPC?
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SHEAR CONNECTION
• #5 Bar Hoop – 4”• 2” Minimum Depth
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PLACING PANELS
• 20 Minutes per Panel• 2 Days
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UHPC MIXING PLANTS
• 2 Mixers• Continuous Pour• Batch about 15 Minutes• LaFarge Personnel On-site• 2 Days
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UHPC COMPONENTS
• Cement - 1 Bag• Steel Fibers – 4 Bags• Safety Gear Required
• Tyvek Suits• Respirators• Gloves
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UHPC COMPONENTS
• Water/Ice – 130 lbs• P150 Super Plasticizer – 33.6 lbs• Digital Scale
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TESTING UHPC
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PLACING UHPC
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CONSTANT HEAD PRESSURE
• Chimneys• Covered Joints
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FORMWORKS
• Wood• Steel?• 8 Days
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ENDWALLS
• Forming Endwalls • Backfilling• Approach Slabs• Barriers• 9 Days
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FINISHING TOUCHES
• Paving• Bridge Grooving• Final Grading• Striping• 3 Days
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OPEN TO TRAFFIC
59 DAYS!
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LESSONS LEARNED
• Experience Using UHPC
• Larger Joint Openings
• Cost vs. Benefit
• Tolerances
• 30 Day Road Closure
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CONTRACT INFORMATION
Award: July 31, 2015
Bid Amount: $2,681,640.30
E.R. Snell Contractor, Inc.
Structural Engineering Solutions, LLC
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SPECIAL THANKS
Lawrence Kahn, Ph.D., P.E. – Georgia Institute of Technology
Ben Graybeal, Ph.D., P.E. – Federal Highway Administration
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FUTURE PROJECTS
• Elliott Road Bridge Replacement
– Precast Deck Panels
• Blackhall Road Bridge
– Decked Bulb-T’s
• Courtland Street Bridge Replacement
– Anticipate Incremental Launching
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CONTACT INFORMATION
Bill DuVall, P.E.
404-631-1985
Dexter Whaley, P.E.
404-631-1909
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