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M-25 over Harbor Beach Creek. Bridge to Culvert Replacement $1.27M Programmed Cost –$270,000 Innovative Bridge Research and Deployment Program Federal.

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Presentation on theme: "M-25 over Harbor Beach Creek. Bridge to Culvert Replacement $1.27M Programmed Cost –$270,000 Innovative Bridge Research and Deployment Program Federal."— Presentation transcript:

1 M-25 over Harbor Beach Creek

2 Bridge to Culvert Replacement $1.27M Programmed Cost –$270,000 Innovative Bridge Research and Deployment Program Federal Grant Existing Harbor Beach Creek Bridge

3 M-25 over Harbor Beach Creek Composite Arch Culvert System aka Bridge in a Backpack

4 Bridge in a Backpack Installing arches Composite decking Arches inflated and formed

5 Bridge in a Backpack Filling arches with concrete Fascia Backfill to road

6 M-25 over Harbor Beach Creek Traffic currently detoured Fix Life of >75 years Every Day Counts Faster + Cheaper + Safer + Smarter = Better Existing Harbor Beach Creek Bridge

7 M-25 over Harbor Beach Creek Started in Spring 2012 Original completion date August 25 Sixteen 12 diameter arch tubes arriving at project site

8 M-25 over Harbor Beach Creek Arch end section Inlet holes for concrete

9 M-25 over Harbor Beach Creek Large lateral forces from arches required battered piles First arch rib install

10 M-25 over Harbor Beach Creek Reinforcement for arch end anchoring into abutment Multiple arch tubes installed

11 M-25 over Harbor Beach Creek Arch tube installation complete Finishing concrete around arch tube endings

12 M-25 over Harbor Beach Creek Composite decking installation

13 M-25 over Harbor Beach Creek Expansive Self Consolidating Concrete (SCC) slump flow test Measuring slump flow

14 M-25 over Harbor Beach Creek Filling arches from top with SCC Sounding for voids – 8/9

15 M-25 over Harbor Beach Creek Challenges: Still need a conventional deep foundation Remote project location, readi-mix supplier 1 hour away Issues with SCC remaining fluid and workable long enough Concrete setting too fast in arch ribs causing voids Working with AIT to resolve issues: Revising SCC mix with additional admixtures Drilling additional holes in arch ribs to fill voids with grout Identify high stress areas via finite model to avoid drilling in those locations

16 M-25 over Harbor Beach Creek When arches complete and composite with concrete, a 7 concrete overlay will be cast over the composite decking for lateral stability Decorative composite finish will be placed on headwalls and wingwalls Placement of roadway fill and pavement section

17 M-25 over Harbor Beach Creek Design specifications recently voted on and approved by AASHTO Subcommittee on Bridges and Structures

18 MDOT CFRP Implementation: Building bridges for the 21 st century AASHTO Subcommittee on Bridges & Structures Technical Committee T-6 Austin, TX, July 9, 2012 Matt Chynoweth, Engineer of Bridge Field Services

19 Existing Structure Two span simply supported prestressed I-beam structure in poor condition (based on NBIS ratings) MDOT CFRP Deployment Pembroke over M-39 Bridge Replacement

20 Materials stored at Detroit Maintenance Garage through winter and spring of 2011 MDOT CFRP Deployment Pembroke Bridge CFCC cables

21 Special provisions for handling instructions were written for installation MDOT CFRP Deployment NEFMAC Grid installation

22 Finished installation MDOT CFRP Deployment NEFMAC Grid installation

23 Measuring deck deflections, deck strains and PT tendon loads MDOT CFRP Deployment Monitoring and Data Collection

24 MDOT CFRP Deployment Complete Pembroke Structure Photos taken October 2011

25 Existing structure Project let January 2012 MDOT CFRP Deployment M-50/US-127 BR over NS RR

26 Cables were double sheathed and fed into 5 conduits MDOT CFRP Deployment M-50 Bridge CFCC cables

27 Cables were double sheathed and fed into 5 conduits MDOT CFRP Deployment M-50 Bridge CFCC cables

28 Fabricators stressing chair: cables stressed to 75 kips, then 150 kips once deck is placed & cured MDOT CFRP Deployment M-50 Bridge CFCC cables

29 Load cells placed on dead end measure micro-strain, which is converted to force MDOT CFRP Deployment M-50 Bridge CFCC cables

30 COLLEGE OF ENGINEERING Steel/CFRP stirrups along the span Steel/CFRP stirrups at diaphragms Transverse ducts for TPT Steel/CFRP prestressing strands

31 Next Steps Other research: MDOT project OR14-24: Evaluating Long Term Capacity and Ductility of Carbon Fiber Reinforced Polymer prestressing and post tensioning strands subject to long term losses, creep, and environmental factors To begin in FY 2013 NCHRP 12-97: Design Guidelines for Field Deployment CFRP prestressed beams in Bridge Construction MDOT submitted research idea

32 Thank you Questions?


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