Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated...
-
Upload
trinhtuong -
Category
Documents
-
view
221 -
download
0
Transcript of Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated...
![Page 1: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/1.jpg)
Total Precast Bridge
Accelerated Construction of Ashcom Cove Creek BridgeBedford Co SR 1004-001
Thursday November 21, 2013
Fall 2013 PennDOT-APC Workshop
![Page 2: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/2.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
2
Project Location
![Page 3: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/3.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
3
![Page 4: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/4.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
4
![Page 5: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/5.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
5
Far Approach (Looking East to West) -- 2007
![Page 6: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/6.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
6
Far Approach (Looking East to West)
![Page 7: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/7.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
7
Upstream Elevation Existing Bridge
![Page 8: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/8.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
8PLAN VIEW FROM AS-BID DRAWINGS
![Page 9: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/9.jpg)
9
Ashcom Cove Creek BridgeBedford County SR 1004-001
ELEVATION VIEW FROM AS-BID DRAWINGS
![Page 10: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/10.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
10
TYPICAL SECTION FROM AS-BID DRAWINGS
![Page 11: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/11.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
• As-Bid Structure– Let date February 23, 2013
– NES&L low bid $1,651,824 ($450 per sf deck area)
– Conventional construction
• Start 4/25/13, End 11/26/13 – 7 months
– Phased, single-lane traffic control
• New Enterprise Stone & Lime VE Proposal– Detour traffic 8 week maximum duration
– All pre-cast construction
– $125,000 cost saving to Department
– Design of as-bid structure essentially replicated.
11
![Page 12: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/12.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
• VE CONSTRAINTS– Conduct public involvement for detour
– Fall wild trout restriction – October 1 thru December 31
– Spring stocked trout restriction – March 1 thru June 15
– Lutzville Bridge on detour route (SR 2019) under construction in 2014
• Decision made to construct prior to October 1 wild trout stream restriction.
12
![Page 13: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/13.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
• VE APPROVAL TIMELINE5/15/13 - Conceptual VE proposal submitted
5/28/13 - Conceptual VE approved by District
6/17/13 - Final VE Proposal submitted to District
7/1/13 - Final VE Proposal resubmitted
7/3/13 - VE Proposal sent to Central Office
7/25/13 - Final VE proposal approved
13
![Page 14: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/14.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
• VE DESIGN TIMELINEDesign submissions broken into two parts:
Part A – Deck Panels & Revisions to P/S Beams
Submitted 6/25/13Approved 7/25/13
Part B – Footings, Wall Panels & Approach Slabs
Submitted 7/12/13Approved 8/8/13
14
![Page 15: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/15.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
• Precast Components of VE Bridge– Footings (same size as as-bid)
– Abutment breast wall and wing wall stems
– Abutment-to-wing wall transition corners
– Deck panels
– Approach slabs
• Cast-in-Place Components– Intermediate diaphragms
– End diaphragms
– Sleeper slabs for approach slabs
15
![Page 16: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/16.jpg)
Ashcom Cove Creek Bridge PrecastVE Total Precast Bridge
16
![Page 17: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/17.jpg)
Ashcom Cove Creek Bridge Precast Production Schedule
17
Dates (in 2013) Components
7/25 – 8/8 Deck Panels (20 panels, 2 panels per day)
8/13 – 8/16 Abutment-to-Wing Corners (4 pieces, 1 piece per day)
8/19, 8/20 Abutment 1 Breast Walls (2 pieces, 1 piece per day)
8/20 – 8/22 Abutment 1 Footings (3 pieces, 1 piece per day)
8/22, 8/23 Abutment 2 Breast Walls (2 pieces, 1 piece per day)
8/24, 8/26, 8/27 Abutment 2 Footings (3 pieces, 1 piece per day)
8/26, 8/27 Abutment 1 Wing Walls (2 pieces, 1 piece per day)
8/28, 8/29 Abutment 2 Wing Walls (2 pieces, 1 piece per day)
8/28, 8/30, 9/3 Approach slabs (6 pieces, 2 pieces per day)
![Page 18: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/18.jpg)
Ashcom Cove Creek Bridge Precast Abutments
• Match-cast, post-tensioned, precast concrete footing and wall panel components
• NMB splice connections for footing-to-stem vertical reinforcement bar continuity.
• SS Mortar by BASF splice sleeve grout. 11 ksi @ 28 days strength
• 5 ksi non-shrink grout to fill 1” gap between top of footing & bottom of wall pieces.
18
![Page 19: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/19.jpg)
Ashcom Cove Creek Bridge Precast Abutment Footings
19
3 Segments per Abut Footing
Max Segment Weight = 31.5 tons
Transverse Post-Tensioning Duct
19.4 T
17.6 T
26.8 T
18.5 T
7’-9” wide
9’-5” wide
![Page 20: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/20.jpg)
Ashcom Cove Creek Bridge Precast Abutment Footings
20
EXCERPT FROM SHOP DRAWING
OF FOOTING
![Page 21: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/21.jpg)
Ashcom Cove Creek Bridge Precast Abutment Footings
21Footing Pieces Cast Upside Down
![Page 22: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/22.jpg)
Ashcom Cove Creek Bridge Precast Abut Walls & Corner Transitions
22
Transverse Post-Tensioning Duct
1 Wall Panel per Wing Wall Corner
Transition
2 Wall Panels per Abut Breast Wall15’ High
NMB Splice Sleeves for Vert ReinfContinuity
30.4 T
24.8
T
34.9 T
36.0 T18
.9 T
21.9
T
18.5
T
17.9
T
![Page 23: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/23.jpg)
Ashcom Cove Creek Bridge Precast Abutment Walls
23
EXCERPT FROM SHOP DRAWING OF WALL PANEL
NMB Splice Sleeve
![Page 24: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/24.jpg)
Ashcom Cove Creek Bridge Precast Abutment Walls
24
![Page 25: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/25.jpg)
Ashcom Cove Creek Bridge Precast Abut-Wing Corner Transitions
25
EXCERPT FROM SHOP DRAWING OF WALL PANEL
NMB Splice Sleeve
Post-Tensioning Duct
![Page 26: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/26.jpg)
Ashcom Cove Creek Bridge Precast Abut-Wing Corner Transitions
26
![Page 27: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/27.jpg)
Ashcom Cove Creek Bridge Abutments - Dry Fit in Fabrication Yard
27
![Page 28: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/28.jpg)
Ashcom Cove Creek Bridge Precast Deck Slab Panels
• Shear pockets to receive horizontal shear steel from beams.
• Deck panels one-half width of bridge -- 12’ +/- in length.
• Lafarge Ductal Ultra High Performance Concrete (UHPC) used in transverse and longitudinal closure pours.
• Following completion of transverse closure pours, panels post-tensioned in longitudinal direction to achieve 250 psi compression.
• Leveling bolts used for grade adjustment and load distribution.
• Dayton Superior J55 epoxy grout used to fill beam haunches and shear pockets.
28
![Page 29: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/29.jpg)
Ashcom Cove Creek Bridge Precast Deck Panels
29
Shear Pockets
UHPC Longitudinal Closure Pour
DECK PANELSWidth = ½ of bridgeLength = 12’-2 ½”
12.2 Tons Typ Weight
UHPC Transverse Closure Pours
P/S Bulb-T’s TEKLA-3D GENERATED DRAWING
![Page 30: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/30.jpg)
Ashcom Cove Creek Bridge Precast Deck Panels
30
Shear Pockets
Typical Deck Panel 12’-2” +/- Long
EXCERPT FROM SHOP DRAWING OF DECK PANELSPLAN VIEW
UHPC Longitudinal Closure Pour
Transverse Closure Pour
(Typ.)
![Page 31: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/31.jpg)
Ashcom Cove Creek Bridge Precast Deck Panels
31
Shear Pockets (Typ over Bms)
EXCERPT FROM SHOP DRAWING OF DECK PANELSBRIDGE CROSS SECTION
UHPC Longitudinal Closure Pour
Barriers Integral w/ Deck Panel
Left Deck Panel Right Deck Panel
![Page 32: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/32.jpg)
Ashcom Cove Creek Bridge Precast Deck Panels
32
Shear Pockets (Typ over Bms)
EXCERPT FROM SHOP DRAWING OF DECK PANELSPLAN VIEW - TYPICAL PANEL
Barriers Integral w/ Deck Panel
![Page 33: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/33.jpg)
Ashcom Cove Creek Bridge Precast Deck Panels
33TRANSVERSE JOINT
LONGITUDINAL JOINT over BEAM 3
P/S Beam Top Flange
Deck Panel (Typ.)
UHPC Closure Pour
Match-cast joint considered but rejected.
![Page 34: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/34.jpg)
Ashcom Cove Creek Bridge Precast Deck Panels – Post Tensioning
34LONGITUDINAL POST-TENSIONING
Flared Anchoring Head
18 Total 0.6” dia. strands
P/T Wedge Chucks
![Page 35: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/35.jpg)
Ashcom Cove Creek Bridge Precast Approach Slabs
35
TEKLA-3D GENERATED DRAWING
Barrier Integral w/ Approach Slab
Transverse Post-Tensioning
UHPC Closure Pours
![Page 36: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/36.jpg)
Ashcom Cove Creek Bridge Precast Approach Slabs
36EXCERPT FROM SHOP DRAWINGS - PLAN
![Page 37: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/37.jpg)
Ashcom Cove Creek Bridge Construction Timeline
37
Days Activities
1 - 3 Set-up detour; install causeway; demo existing super & Abut 1
3 – 5 Excavate for new Abut 1; install shoring @ Abut 29 Install new Abut 1; demo existing Abut 2; excavate new Abut 2
10 Backfill new Abutment 111 Install new Abutment 212 – 16 Backfill new Abut 2; place scour protection; prep for setting beams17 Set prestressed concrete beams18 – 20 Set deck panels; form & reinforce intermediate & end diaphragms22 – 23 Pour diaphragms; form deck panel transverse shear keys 24 Form beam haunches25 – 26 Place UHPC in transverse deck joints29 Post-tension deck panels30 – 31 Construct approach slab sleeper slab; grout PT ducts
![Page 38: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/38.jpg)
Ashcom Cove Creek Bridge Construction Timeline (continued)
38
Days Activities
32 – 33 Set approach slabs
36 Re-prep haunches; begin work on roadway approaches
37 – 38 Place epoxy grout in beam haunches & shear pockets39 Place UHPC in deck longitudinal closure joint.
40 – 44 Clean-up deck45 – 53 Epoxy deck patches; strip haunch formwork; addt’l roadway work54 OPEN BRIDGE
![Page 39: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/39.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
39ABUTMENT – FOOTING INSTALLATION
250-ton crane used for Abutment 2125-ton crane used for Abutment 1
![Page 40: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/40.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
40ABUTMENT – FOOTING INSTALLATION
![Page 41: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/41.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
41ABUTMENT – FOOTING INSTALLATION
![Page 42: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/42.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
42ABUTMENT – FOOTING INSTALLATION
![Page 43: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/43.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
43ABUTMENT – FOOTING INSTALLATION
![Page 44: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/44.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
44
ABUTMENT – WING WALL SETTING
![Page 45: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/45.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
45ABUTMENT – CORNER TRANSITIONS
![Page 46: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/46.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
46ABUTMENT – BREAST WALL INSTALLATION
![Page 47: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/47.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
47ABUTMENT – COMPLETED PRECAST ASSEMBLY
![Page 48: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/48.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
48ABUTMENT – COMPLETED PRECAST ASSEMBLY
![Page 49: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/49.jpg)
Ashcom Cove Creek Bridge Construction - Substructure
49ABUTMENT – SPLICE SLEEVE GROUTING
![Page 50: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/50.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
50PRECAST DECK PANELS
![Page 51: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/51.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
51PRECAST DECK PANELS
![Page 52: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/52.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
52PRECAST DECK PANELS
![Page 53: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/53.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
53
PRECAST DECK PANELS
ADJUSTING LEVELING BOLTSAdjusting Leveling Bolt
with Impact Wrench
View of Leveling Bolts from Underside of Deck Panel
![Page 54: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/54.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
54
PRECAST DECK PANELSUHPC Closure Pours Haunch Formwork
Steel FibersPre-Blended Cementitious
Transverse Closure Pour
Transverse Joint Profile
![Page 55: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/55.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
55PRECAST DECK PANELS - UHPC Closure Pours
![Page 56: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/56.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
56
PRECAST DECK PANELSPost-Tensioning
Prior to Anchoring Head Installation
6 sets of 3 – 0.6” dia. strands
P/T Ducts at Transverse Deck Panel Joint
![Page 57: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/57.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
57
PRECAST DECK PANELSEpoxy Grout in Beam Haunches & Shear Pockets
Epoxy Part ’A’Pre-Blended Cementitious Epoxy Part ’B’
Mixing Parts ‘A’ & ‘B’ Epoxies
Shear Pocket
![Page 58: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/58.jpg)
Ashcom Cove Creek Bridge Issues Encountered
• Wall panels hung up on edges of protruding vertical steel reinforcement coming out of footing. Possible solution is to grind a small taper on the ends of the reinforcement bars.
• Since dimensional tolerances are tight, any gap between wall panels during placement made fit-up more difficult.
• Due to viscous nature of grout materials, special attention and detail had to be paid to beam haunch formwork.
• Viscosity of UHPC & epoxy grout materials sensitive to ambient temperatures. – Ice had to be used for mix water for 1st UHPC pour (transverse deck joints) during period of
higher ambient temperature (+80oF.)
– Reduced aggregate content had to be used for epoxy grout mix (3 bags vs. standard 4 bags) during periods of lower ambient temperatures (60oF +/-.)
• Challenging to achieve proper top of deck grade using leveling bolts while simultaneously evenly distributing weight to beams.
• Alignment of barrier was primary control when setting deck panels. This resulted in some unevenness of top of deck near C/L bridge.
• Prefabrication of approach slabs to achieve cross-slope was challenging. • Steel fibers in UHPC mix settled to an unexpected extent during second
placement operation (longitudinal closure pour.)58
![Page 59: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/59.jpg)
Ashcom Cove Creek Bridge Construction - Superstructure
59
PRECAST DECK PANELSUltra High Performance Concrete (UHPC) – Steel Fiber Dispersion
Atypical Steel Fiber
Separation in Longitudinal Closure Pour
Normal Steel Fiber
Dispersion in Transverse
Closure Pour
3” dia x 6” Cylinders Saw Cut in HalfCompression Test
Cylinder from Transverse
Closure Pour
Cylinder from Longitudinal Closure Pour
Cylinder from Longitudinal Closure Pour
![Page 60: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/60.jpg)
• Three 1 5/8” diameter cores were extracted from longitudinal closure pour.
• Sub-cores were created – one from “upper” zone and one from “lower” zone.
• Compressive strength tests were performed by PADOT structures lab. Below are results:
Ashcom Cove Creek Bridge Construction - Superstructure
60Ultra High Performance Concrete (UHPC) – Steel Fiber Dispersion
CORE ZONE STRENGTH(psi)
1 Upper 18,030
Lower 23,000
2 Upper 28,180
Lower 27,910
3 Upper 24,210
Lower 22,550CORE 2 CORE 3
![Page 61: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/61.jpg)
Ashcom Cove Creek Bridge Lessons Learned
• Planning and preparation is key to success (forms, erection, coordination with outside suppliers, etc.)
• UHPC and epoxy grout materials are expensive and do not lend themselves to placement from ready-mix trucks. Different grout options need to be investigated.
• Beam haunch forming is time consuming.• Load distribution of precast deck panels onto beams is different from
conventional cast-in-place construction. This needs to be considered in camber computations and beam designs.
• Coarse aggregate bedding for footings should be graded after pieces are dry fit together.
• The schedule needs to be clearly communicated to the entire team including manufacturer representatives required to be on-site.
61
![Page 62: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/62.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
62
Completed Project54 Calendar Days
![Page 63: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/63.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
63
![Page 64: Total Precast Bridge Accelerated Construction of · PDF fileTotal Precast Bridge Accelerated Construction of ... Compression Test 3” dia x 6” Cylinders Saw Cut in Half ... •](https://reader033.fdocuments.in/reader033/viewer/2022052708/5a6fcd797f8b9ab1538b63fa/html5/thumbnails/64.jpg)
Ashcom Cove Creek BridgeBedford County SR 1004-001
64
QUESTIONS?