shrp 2 - r04 innovative bridge designs for rapid renewal
TRANSCRIPT
SHRP 2 - R04 Innovative Bridge Designs for Rapid Renewal
FEHRL Long Life BridgesSQUARE (Brussels)
Thursday June 10, 2010
Objective…
RAPID RENEWAL – Bridge Systems
WHAT IS THE BIG IDEA?
Manufactured Bridges
Off Site
RAPID RENEWAL – Bridge Systems
COROLLARY?
Maximize Off-SiteMinimize On-Site
Off Site
RAPID RENEWAL – Bridge Systems
THINKING LIKE A CONTRACTOR
Off Site
MAXIMIZE Off-Site
WHY?
On Site
MINIMIZE ON-SITE
WHY?
Time – User costs Time – Self Performance Time – Fewer components
Phase 1Define
COMPLETE SYSTEMS Concrete Superstructures Composite Superstructures Eliminate Piles and Caps
Project Overview
Three Phases
Phase 1 – Define Phase 2 – Develop Phase 3 – Demonstrate
Phase 1
PHASE 1 – Define
What has been done? What are the challenges? Feasible concepts (incremental)
Phase 1Define
RAPID RENEWAL – Bridge Systems
As Light as Possible As Simple as Possible As Easy to Erect as Possible
Define
Phase 1 – Lighter
As Light as Possible …
Lighter foundations Lighter equipment
Develop
Phase 1 – Simpler
As Simple as Possible …
Fewer structure elements Fewer field splices Fewer bracing systems
Develop
Phase 1 – Easier
As Easy to Erect as Possible …
Less labor Less CIP Less equipment
ConceptsCategories
Phase 1 - Define Concepts
1. Precast Substructure Systems
2. Complete Superstructure Systems
3. Construction Technologies
Micro-Piles
1a – Foundation Systems
SPER
1b – Precast Shell Systems
On SiteAssembly
1c – Substructure Systems
Offsite Manufacture
2 – Superstructure Systems
2a - Modular beam systems Deck Bulb Tees and Double T’s Decked Girder Stringer systems Decked Box girder systems
2b - Segmental systems Segmental slabs Segmental voided slabs
Modular Systems
2a - Modular Beam Systems
Deck Bulb Tees
FOLDED PLATE - Modular Beam Systems
2b – Segmental Systems Solid Slabs and Voided Slabs
2b - Solid Slabs and Voided Slabs
Solid Slabs and VoidedbsComplete Superstructure Systems
RecommendedConstruction
Concepts
3 – ABC Construction Systems
Methods Launching, Sliding and Lateral shifting
Equipment Wheeled carriers / SPMT Straddle carriers Erection girders
RecommendedConstruction
Concepts
Methods Launching,
Segmental and Slab Systems
Incrementally Launched Slab
RecommendedConstruction
Concepts
Methods Launching, Sliding and Lateral shifting
Lateral Slide
Phase 1Define
3 – Construction Systems
Tier 1 Weekend closures
Tier 2 Completed in a few weeks
Tier 3 Save weeks and/or months on the overall schedule
RecommendedConstruction
Concepts
3 – ABC Construction Systems
Equipment
Wheeled carriers / SPMT Straddle carriers Erection girders
GantrySystems
UNIVERSAL ERECTION GANTRY Piles Substructure units Superstructure units Overlay
Courtesy Flatiron Construction
Washington Bypass
Courtesy Flatiron Construction
Pile driving, precast cap erection, precast beam erection, all from the rear.
Averaging 1 complete span per week
GantrySystems
Gantry Systems
Step 1 – Deliver Gantry and Set-UpStep 2 – Remove Existing Step 3 – Erect New
Carrier delivers erection gantry Secondary vehicles deliver beams / units
ADC’s
ABOVE DECK CARRIER SYSTEMS - (ADC’s)
ADC’s
ADC Removal
Stages
ADCErection
Stages
Phase 3
PHASE 3 – WORK PLAN
Part 1 – ABC Tool Kit of Design Standards
Part 2 – Construct Demonstration Project
Part 3 – Specifications for ABC
Part 4 – ABC Training Materials
Iowa ABC Demonstration ProjectTier 2 - Two week closure
US 6Bridge over Keg Creek
Council BluffsIowa
Outside Existing
Footprint
Substructures ConstructionOutside existing footprint
Stage 1 Work (prior to closure) Construct drilled shafts to ground level Construct wingwalls on piles
Stage 2 work (during 14-day “ABC” period) Close bridge/enact detour Demolish existing bridge Assemble precast columns/capbeams Assemble semi-integral abutments
Precast Columns and Cap
Stage 2 work (cont’d) Straddle existing substructures and
Modular Deck
Modular SuperstructureOff site
Demo Bridge
Sequence
Stage 3 work (during 14-day “ABC” period) Assemble modular superstructure Cast UHPC closure joints Re-open bridge to traffic
Connection Details
Deck Joint
Connection Details
Abutment Joint
Phase 3
PHASE 3 – WORK PLAN
Part 1 – ABC Tool Kit of Design Standards
Part 2 – Construct Demonstration Project
Part 3 – Specifications for ABC
Part 4 – ABC Training Materials
Phase 3
TOOL BOX of ABC STANDARD SOLUTIONSPre-Engineered Solutions
Bridge Concepts
Staging Concepts
Equipment Concepts
CONCLUSIONS
What Have we Learned So Far?
Project Schedule
Conclusions
LESSONS LEARNED?
Lesson 1 - About Innovation?
Lesson 2 - About Changes and Challenges?
Lesson 3 - About Implementation?
Conclusions
What have we learned so far?
Lesson 1…About Innovation
Incremental is essential Out of the box is good Recognize the Lag
Conclusions
What have we learned so far?
Lesson 2 … About Challenges?
Least initial cost vs best value (Owners) Self-performance (Contractors) Reluctance to change (Designers)
Conclusions
What have we learned so far?
Lesson 3 … About Implementation?
Collaboration (ATC – DB) Construction – Value
The EndLa FIN
Avez-Vous des Questions?