OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E....
Click here to load reader
-
Upload
nathan-tillman -
Category
Documents
-
view
264 -
download
2
Transcript of OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E....
![Page 1: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/1.jpg)
OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF
PT SPLICED GIRDER BRIDGE
OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF
PT SPLICED GIRDER BRIDGE
Teddy Theryo, P.E.Bryce Binney, P.E., S.E.Parsons BrinckerhoffSegmental Bridge Group
PCEF COMMITTEE MEETING IN DOVERAUGUST 25, 2009
![Page 2: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/2.jpg)
11
22
33
44
55
Definition & HistoryDefinition & History
Construction ProcessConstruction Process
Presentation OutlinePresentation Outline
Design AspectDesign Aspect
Segment DetailingSegment Detailing
Grouting, Anchorage Protection Grouting, Anchorage Protection
![Page 3: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/3.jpg)
OutlineOutline
• Definition
• Reasons for Use
• History (Florida Specific)
• Current Practices
11 Definition & HistoryDefinition & History
![Page 4: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/4.jpg)
Definition of Spliced Girder: Definition of Spliced Girder:
• NCHRP Report 517 “Extending Span Ranges of Precast Prestressed Concrete Girders” Defines as:
Section 1.3.1 “…a precast prestressed concrete member fabricated in several relatively long pieces (i.e., girder segments) that are assembled into a single girder for the final bridge structure. Post-tensioning is generally used to reinforce the connection between girder segments.”
Definition:
Reasons for Use:
• Increasing span lengths• Improving safety by eliminating shoulder piers
or interior supports (beginning applications)• Economic considerations (cost savings over
other materials)
![Page 5: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/5.jpg)
History in Florida: History in Florida:
• 1967 AASHTO Traffic Safety Committee Report“…adoption and use of two-span bridges for overpasses crossing divided highways…to eliminate the bridge piers normally placed adjacent to the shoulders”
Growing concern over highway safety during middle 1960’s
![Page 6: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/6.jpg)
History: History:
• PCI, Prestressed Concrete for Long Span Bridges, 1968.• PCI Bridge Bulletin, “Long Spans with Standard Bridge
Girders”, 1967.
PCI published information to extend spans:
Florida used this approach on bridges in the late 1970’s:
• Chipola Nursery Bridge (Northwest Florida)• I-75 Overpasses (Southwest Florida)• Both used AASHTO Type IV with spans of
approx. 115’
~115' ~115'
Publications addressed splicing using P/T and falsework
![Page 7: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/7.jpg)
Typical UsageTypical Usage
200’ to 300’
150’
65’
• Original concept evolved to bulb-tees with haunches• Intracoastal Waterway Crossings (navigational
clearance)• Spans up to 300’ can be accommodated
Haunch Girder is used for span equal or larger than 250’
![Page 8: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/8.jpg)
Spliced Girder Project Photos Spliced Girder Project Photos
PascagoulaBridge, MS
EscambiaRiver Bridge
Rt.33 Bridge, VA
![Page 9: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/9.jpg)
• Design/Construction Interdependency
• Erection Process
• Design Concept
OutlineOutline
22 Construction ProcessConstruction Process
![Page 10: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/10.jpg)
DESIGN
CONSTRUCTION
Design ApproachDesign Approach
![Page 11: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/11.jpg)
Temporary Support During Construction Temporary Support During Construction
•Robust temporary structures
•Stable structure at all stages
•Avoid using PT bars coupler if possible
•Robust temporary bracing system
•Lock girder Supports against longitudinal
and lateral sliding
![Page 12: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/12.jpg)
Erection ProcessErection Process
1
23 4
Haunch Segment Drop-in SegmentEnd Segment
![Page 13: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/13.jpg)
Install FalseworkInstall Falsework1
![Page 14: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/14.jpg)
Falsework on Pier FootingFalsework on Pier Footing1
![Page 15: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/15.jpg)
Install Haunched SegmentsInstall Haunched Segments2
![Page 16: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/16.jpg)
Transporting Haunched GirdersTransporting Haunched Girders2
![Page 17: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/17.jpg)
Placement of GirderPlacement of Girder2
![Page 18: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/18.jpg)
Erecting Haunched GirdersErecting Haunched Girders2
![Page 19: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/19.jpg)
Install Temporary BracingInstall Temporary Bracing2
![Page 20: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/20.jpg)
Place End SegmentsPlace End Segments3
Strongback
![Page 21: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/21.jpg)
Installing StrongbacksInstalling Strongbacks3
![Page 22: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/22.jpg)
Place End SegmentsPlace End Segments3
![Page 23: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/23.jpg)
Strongback DetailStrongback Detail3
![Page 24: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/24.jpg)
Place Drop-in GirdersPlace Drop-in Girders4
![Page 25: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/25.jpg)
Prepare for Drop-in GirdersPrepare for Drop-in Girders4
![Page 26: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/26.jpg)
Placing Drop-in GirderPlacing Drop-in Girder4
![Page 27: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/27.jpg)
Apply Post TensioningApply Post Tensioning5
![Page 28: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/28.jpg)
Design Concept Design Concept
• Girders erected & supported by falsework or strongbacks
Significant Stages of Construction:
![Page 29: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/29.jpg)
Design Concept Design Concept
• C.I.P. diaphragms or splices poured, Stage 1 P/T applied
Significant Stages of Construction:
![Page 30: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/30.jpg)
Design Concept Design Concept
• Deck poured, Stage 2 P/T applied (deck compression)
Significant Stages of Construction:
• Longitudinally, bridge is fully serviceable. Deck and girders held to an allowable stress (usually 3√f’c).
![Page 31: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/31.jpg)
Assumed Erection SequenceAssumed Erection SequenceConstruction Sequence to be included in contract documents
![Page 32: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/32.jpg)
• Span to Depth Ratios
• Staged Construction Loading
• Post-Tensioning Layouts
• Deck Replaceability
OutlineOutline
33 Design AspectDesign Aspect
![Page 33: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/33.jpg)
Design PhilosophyDesign Philosophy
• Two Stages of Post-Tensioning
• Stability
• Serviceability
• Time Dependant Analysis
• Ultimate Limit States
![Page 34: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/34.jpg)
Span to Depth Ratios Span to Depth Ratios
• Simple span AASHTO prestressed girders (L/20)
General Guidelines:
** See AASHTO LRFD Article 2.5.2.6.3. Agency may adhere to these requirements.
L/20
L/25 – L/28
L/20 – L/25
• Continuous post-tensioned spliced girder (L/25 to L/28)
• Haunched pier continuous post-tensioned spliced girder (L/20 to L/25)
![Page 35: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/35.jpg)
Staged Dead LoadsStaged Dead Loads
• Erect girders
+
• After P/T, removal of temp. supports**
+• Deck pouring
Example of Dead Load Staging:
** Notice change in static scheme in this stage to a continuous unit
![Page 36: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/36.jpg)
Staged Construction Staged Construction
• Incremental summation of all loads• Changes in static system throughout construction• Time dependant creep & shrinkage, including
beam/slab differential (CEB-FIP Model Code Capability Preferable)
• Temporary loads & supports• Preferably ability to pour deck in stages
*Forces/stresses in structure are sum of all load casesFinal analysis program should account for:
A few available software packages:
• BD2• TANGO• ADAPT• Consplice (LEAP)• MIDAS• RM• LARSA 4D
![Page 37: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/37.jpg)
Post Tensioning Post Tensioning
Typical Tendon Profile
• Parabolic profile
• Inflection points at 0.9 to 0.95 of span length
Parabolic
90% to 95% of Span
![Page 38: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/38.jpg)
Post Tensioning Post Tensioning
• 3 to 5 tendons per girder• 9 to 15 strands per tendon• Normally 50% of the
tendons stressed on non-comp. structure
Typical Tendon Sizes
Double End Stressing
• For tendons with excessive lengths, dual
end stressing may be required to overcome
large friction loss.
![Page 39: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/39.jpg)
Other Considerations Other Considerations
• Non-Linear Temperature Gradient
• Check Principle Web Stress (composite section complicates this procedure, perhaps check at non-composite & composite C.G.) If stresses are high, 3.5√f’c to 4.0√f’c, consider using a thicker web.
Miscellaneous Considerations
![Page 40: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/40.jpg)
Vertical GeometryVertical Geometry
Spliced FBT-78 Navigational UnitFinished Grades vs. Top of Beam Elevations
71.0
71.5
72.0
72.5
73.0
73.5
74.0
74.5
75.0
75.5
0.0 100.0 200.0 300.0 400.0 500.0
Distance From Begin Main Unit
Fin
ish
ed
Gra
de E
levati
on
Finished Grades Top Of Beam
![Page 41: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/41.jpg)
Deck Replaceability Deck Replaceability
Common Practice to include the deck as part of
composite section in supporting SDL and Live
LoadsCan the deck be replaced ?
Answer: Yes
How can the deck be replaced ?
It must be designed for deck replacement
![Page 42: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/42.jpg)
Deck Replaceability Deck Replaceability
Design Strategy for Deck Replacement
•Use light weight Concrete Deck
•Use Precast Deck Panel (ABC)
•Stress all tendons prior to deck placement
•Add temporary / permanent straight top tendon
•Deck and girder is a composite section for SDL
and LL (no prestress in the deck section)
![Page 43: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/43.jpg)
• Web Thickness
• Pier Segment
• End Span Segments
OutlineOutline
44 Segment DetailingSegment Detailing
![Page 44: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/44.jpg)
Beam DesignBeam Design
![Page 45: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/45.jpg)
Web ThicknessWeb Thickness
• PT Ducts
• Concrete Placement
• Vibratory Clearance
• Radial Stresses
Pouring Concrete
![Page 46: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/46.jpg)
Radial StressesRadial Stresses
• Strand Tensioning
• Grout Pressure
![Page 47: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/47.jpg)
Post Tensioning DuctsPost Tensioning Ducts
Oval Ducts Round Ducts
Longitudinalcracking
Spall ofouter concrete
![Page 48: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/48.jpg)
Haunched BeamsHaunched Beams
![Page 49: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/49.jpg)
Pier Segment Considerations Pier Segment Considerations
• Support self-weight during transport and erection• Support weight of “drop-in” girders with prestressing
(other loads: diaphragms, strongbacks, construction loads)
Erection Load Case
Prestressing Configuration• Positive and negative moments during construction• Use eccentricity vs. 1/P diagrams to satisfy both
conditions
![Page 50: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/50.jpg)
Pier Segment Considerations Pier Segment Considerations Pier Segment Cross-Section
![Page 51: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/51.jpg)
Pier Segment – Vertical BurstingPier Segment – Vertical BurstingVertical Bursting
P
P
P
P
@ 0.6H @ 0.4H
3”
1.75”
11.5”
26.5”
End of Beam Elevation
T
![Page 52: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/52.jpg)
Ult. Negative Moment Capacity Ult. Negative Moment Capacity
Over-reinforced(AASHTO Formulas)
Under-reinforced(AASHTO Formulas)
32”
40”
20”
52”
Neg. Moment
![Page 53: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/53.jpg)
Ult. Negative Moment Capacity Ult. Negative Moment Capacity
Local Widening of Compression Flange
![Page 54: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/54.jpg)
End Segment Considerations End Segment Considerations
• Use local thickening of beam to accommodate anchorages
• Consider staging of P/T in bursting models
• If beam reaction is > approx. 10% of P/T force, consider in S & T
Bursting Forces
Anchorage Block
• Use web tapering to transition to typical beam cross-section
![Page 55: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/55.jpg)
PT AnchoragePT Anchorage
DSI old Anchorage
![Page 56: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/56.jpg)
DSI Multi Strand Anchorage DSI Multi Strand Anchorage SystemSystem
Post-Tensioning Anchorage Post-Tensioning Anchorage
Post groutingPost grouting
Inspection Inspection accessaccess
Grout poGrout portrt
COMPLY WITH FDOT SPEC
![Page 57: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/57.jpg)
VSL MULTI STRAND ANCHORAGE SYSTEM
SYSTEM PRESSURE TESTING (COMPLY WITH FDOT SPEC)
![Page 58: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/58.jpg)
Hardware System – FDOT 462 Hardware System – FDOT 462
Anchorages – Including Inspection Ports
Grout & Inspection Port
![Page 59: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/59.jpg)
Hardware System – FDOT 462 Hardware System – FDOT 462
Pressure Tested Ducts
![Page 60: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/60.jpg)
Anchorages/End BlockAnchorages/End Block
Adjacent Span or backwall placed after bottom strands are jacked
![Page 61: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/61.jpg)
Anchorages/End BlockAnchorages/End Block
Adjacent Span or backwall placed after bottom strands are jacked
![Page 62: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/62.jpg)
Anchorages/End BlockAnchorages/End Block
Top View
Adjacent span or backwall can be placed before tensioning
![Page 63: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/63.jpg)
End Segment Design End Segment Design
1st Stage Post-Tensioning
2nd Stage Post-Tensioning
• Also need to consider case at prestressing
T
T
1st Stage & P/S
T
T
T
2nd Stage P/T
Stage 1 & P/S
![Page 64: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/64.jpg)
End Segment Details End Segment Details
![Page 65: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/65.jpg)
• Recent research has reveled the importance of good grouting practices
• Anchorages shall receive multiple layers or protection to avoid ingress of contaminants
• Florida DOT has implemented a stringent / robust PT and grouting spec. to enhance durability
OutlineOutline
55 Grouting & Anchorage ProtectionGrouting & Anchorage Protection
![Page 66: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/66.jpg)
Duct
Stressing
Anchorage Grout Tube/Drain
VentStrand
Bundle
Grout Dead End
Anchorage
Grout
Flow
Simply Supported BeamSimply Supported Beam
Continuous BeamContinuous Beam
Grout Tube/Drain
Vent Vent
Grout
Flow
Grout FlowGrout Flow
Grout Tube/Drain
Vent Vent
Min.
3 ft.
Grout Tube and Grout Vent LocationsGrout Tube and Grout Vent Locations
Grout from lowest point and one direction grout flowGrout from lowest point and one direction grout flow
![Page 67: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/67.jpg)
Highlights of Florida GroutingHighlights of Florida GroutingGrout Vent
Drain
![Page 68: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/68.jpg)
Highlights of Florida GroutingHighlights of Florida Grouting
• Grout Material– Zero Bleed Water, Pre-Bagged, Pre-Approved
• Duct Material– Plastic Duct, Light Color– Sealed & Pressure Tested
• Grouting Procedure– Injected Solely from Extreme Low Point– High Points & Anchorages Inspected After Grouting– Secondary (Vacuum) Grouting if Needed
![Page 69: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/69.jpg)
Anchorage Protection (FDOT Standard)Anchorage Protection (FDOT Standard)
PermanentGrout Cap
Epoxy GroutPour-back
Diaphragm
Deck Slab PourFull Width
PermanentGrout Cap
Epoxy GroutPour-back
Drain Hole (extendOutside of Beam – fillWith Epoxy Grout)
Diaphragm
Four Levels of Protection:• Grouted Tendon• Permanent Grout Cap• Epoxy Grout Pour-Back• Encapsulating Diaphragm
![Page 70: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/70.jpg)
Summary Summary
• Spliced girder explanation• Construction process• Design philosophy• Segment detailing/design• Addressed durability and grouting
Topics Presented
Final Statement:Concrete spliced girders provide an
economical and durable alternative for medium span ranges. With increasing familiarity to owners and contractors, they will likely become a common solution…..
![Page 71: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/71.jpg)
References References • Anon., “Highway Design and Operational Practices Related to
Highway Safety,” Report of the Special AASHTO Traffic Safety Committee, February 1967.
• Anon., Prestressed Concrete for Long Span Bridges, Prestressed Concrete Institute, Chicago, 1968.
• Anon., “Long Spans with Standard Bridge Girders,” PCI Bridge Bulletin, March-April 1967, Prestressed Concrete Institute, Chicago.
• Castrodale, R. W., and C. D. White. 2004 “Extending Span Ranges of Precast, Prestressed Concrete Girders.” NCHRP Report 517. TRB, National Research Council, Washington, D.C.
• “Detailing for Post-Tensioning”, VSL International, Bern Switzerland, 1991.
• FDOT, New Directions for Florida Post-Tensioned Bridges, Volumes 1 & 4.
• Podolny, Jr., Walter, and Jean Muller, “Construction and Design of Prestressed Concrete Segmental Bridges,” John Wiley & Sons, Inc., New York, 1982.
• PTI. 2000. Post-Tensioning Manual, 6th ed., Post-Tensioning Institute, U.S.A., Ch. VIII, Anchorage Zone Design.
• Ronald, H. D. 2001. “Design and Construction Consideration for Continuous Post-Tensioned Bulb-Tee Girder Bridges.” PCI Journal, Vol. 46, No. 3, Prestressed Concrete Institute, Chicago, IL, May-June 2001, pp. 44-66.
![Page 72: OVERVIEW OF ESSENTIAL DESIGN AND CONSTRUCTION ASPECTS OF PT SPLICED GIRDER BRIDGE Teddy Theryo, P.E. Bryce Binney, P.E., S.E. Parsons Brinckerhoff Segmental.](https://reader038.fdocuments.us/reader038/viewer/2022102503/56649c805503460f949383d7/html5/thumbnails/72.jpg)
Thank you for your timeThank you for your time
Any questions?