Upload
avis-thompson
View
217
Download
1
Tags:
Embed Size (px)
Citation preview
Design Bid Build vs. Design Build Partnering BOS Involvement
Project Delivery
Project Inception
Plans and Specifications
Construction Technical Support
Document& Refine
UDOT FHWA WisDOT
Design Considerations - Guidance
UDOT - Manual for the Moving of Utah Bridges Using Self UDOT- Propelled Modular Transporters (SPMTs)•SPMT Process Manual And Design Guide
FHWA - Manual on Use of Self-Propelled Modular Transporters to Remove and Replace Bridges
13
Bridge Staging Areas ◦ Space requirements◦ Geotechnical
investigation◦ Level terrain for
travel Path◦ Positive drainage◦ Environmental
considerations
Construction
Rawson Bridge Staging – West Span
Rawson Bridge Staging – East Span
14
Shoring Towers◦ Two (2) span 45W
girder bridge◦ Timber crane pads◦ Steel shore towers◦ Steel header◦ Anchorage for
lateral loads and stability
Construction
Shoring Tower – West Span
Shoring Tower – East Span
15
Self Propelled Modular Transporter (SPMT)◦ Ground
improvements on travel path
◦ Steel plates for turning radius
◦ Space for bracing and existing shore towers
◦ 138’ feet wide ◦ 95’ feet long
Construction
16
SPMT◦ Heavy lift contractor◦ Submittal reviews◦ 35 semi-loads of
equipment◦ Site access◦ Assembled in 48
hours Public viewing area
Construction
17
Pre-Move Deck Crack Inspection◦ Deflection
monitoring during bridge Move
◦ Post move crack inspection
◦ Pier closure pours◦ May 28th to June 23rd
closure window
Construction
18
Pre-cast pier construction◦ Driven pile and cast
in place pile cap◦ Detailed bar steel
placement with template
◦ High early strength masonry
Construction
19
Pre-cast concrete columns
High strength bar steel couplers
Footing to column connection
Column to precast cap connection
8000 psi non shrink grout
Construction
20
Pre-cast pier construction◦ Pre-cast concrete cap ◦ Sections up to 45
tons – Two (2) crane pick
◦ Grouted bar coupler Connection to columns
◦ Tight construction tolerances
◦ Survey control
Construction
21
Pre-cast pier construction
Lessons learned:◦ Detail additional room
for bar couplers◦ Comprehensive
survey control◦ Steel templates for
bar steel◦ Match cast pre-cast
elements
Construction
22
Keys to Project Success◦ Public outreach and
involvement◦ Close coordination with
prime and heavy lifter◦ Travel path preparation
and planning◦ Project partnering with
stakeholders
Construction