Miami Marlins Baseball Park

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1 Miami Marlins Baseball Park Roof Support Track Beams Construction by Incremental Lifting

2 Project Owner Miami Dade County General Contractor Hunt-Moss JV Frame Contractor Formworks-Baker Concrete JV Engineer of Record Bliss & Nyitray Structural Engineers Heavy Lifting, Post-Tensioning Contractor VSL-Florida

3 Const. Joint Const. Joint NORTH TRACK ELEVATION 5 SPANS TOTAL L= Const. Joint Const. Joint

4 30-3 NORTH TRACK PIER SEGMENT TYPICAL SECTION NORTH TRACK TYPICAL SECTION

5 Const. Joint Const. Joint Const. Joint Const. Joint SOUTH TRACK ELEVATION 5 SPANS TOTAL L=

6 35-3 SOUTH TRACK PIER SEGMENT TYPICAL SECTION SOUTH TRACK TYPICAL SECTION

7 01 Service Level Original Design; Casting in place on falsework

8 Roof Track Construction, Original Construction method Disadvantages Full shoring to grade which compromise overall project schedule Safety risks, due to the Height of construction Production risks Construction and wind loads Labor resources Limited shoring resources

9 VSL Proposed Construction Method Build Foundations Cast Piers Cast Pier Tables

10 PHASE 2 Pour Span 1 Bottom Slab

11 PHASE 3 Pour Span 1 Webs Pour Span 2 Bottom Slab

12 PHASE 4 Pour Span 1 Top Slab Pour Span 2 Webs Pour Span 3 Bottom Slab

13 PHASE 5 Stress Stage 1 PT in Span 1 Lift Span 1 Pour Span 2 Top Slab Pour Span 3 Webs Pour Span 4 Bottom Slab

14 PHASE 6 Stress Stage 2 PT in Span 1 Stress Stage 1 PT in Span 2 Lift Span 2 Pour Span 3 Top Slab Pour Span 4 Webs Pour Span 5 Bottom Slab

15 PHASE 7 Stress Stage 2 PT in Span 2 Stress Stage 1 PT in Span 3 Lift Span 3 Pour Span 4 Top Slab Pour Span 5 Webs

16 PHASE 8 Stress Stage 2 PT in Span 3 Stress Stage 1 PT in Span 4 Lift Span 4 Pour Span 5 Top Slab

17 PHASE 9 Stress Stage 2 PT in Span 4 Stress Stage 1 PT in Span 5 Lift Span 5

18 PHASE 10 Stress Stage 2 PT in Span 5

19 Lifting Equipment Schematic Front Lift on Trailing End Back Lift on Leading End

20 VSL Proposal Challenges: Check spans capacity for lifting load Check Columns and foundations for temporary load induced by the heavy lifting method. Rearrange Post-Tensioning layout and check final Posttensioning forces Coupling of approximately 260 #11 Bars per span Splicing top rebar at the pier table

21 Creating North Track Lifting Sequence

22 2 x 339 k 2 x 674 k 2 x 674 k 2 x 718 k 2 x 718 k 2 x 645 k 2 x 645 k 2 x 718 k 2 x 718 k Creating South Track Lifting Sequence

23 Lifting Detail Column T1

24 Lifting Detail Column T2

25 Lifting Detail Column T7, T5, T3 T8, T6, T4

26 Post-Tensioning Layout Phase I ECI6-12 Tendons Stressed at the diaphragm Phase II ECI6-19 Tendons Stressed at the blisters

27 Post-Tensioning Layout Phase I ECI6-12 Tendons Stressed at the diaphragm Phase II ECI6-19 Tendons Stressed at the Blisters

28 Step-1 1. Connect Tie-Down cables to adjacent span or rock anchor 2. Lifting Span into place 3. Securing Span to Pier Table 4. Check Span elevation

29 Step-2 1. Raise closure forms into place 2. Install male bar in form savers, webs and bottom slab 3. Splice top rebar and web rebar 4. Couple #11 bottom bars 5. Splice PT ducts at the closure

30 Step-3 1. Pour closure pour

31 Step-4 1. Stress Phase I PT cables 2. Remove Lifting equipment to the next Pier Table

32 Heavy Lifting beams Approximately Weight 50 Tons

33 Heavy Lifting Jacks SLU -330

34 Bottom lifting Anchors VSL 6-37 Stay Cable anchor with ring nut

35 Lifting Strand 0.6 Dyform strand Grade 270 A=0.256 sq in

36 Place Lifting Beams on top of Pier Segment

37 Drop Lifting Cables

38 Connect Lifting Cables to Tie Down Rock Anchors

39 Connect Lifting Cables to span Bottom Lifting Anchors Detail

40 Lift-off and Finishing Bottom Beam

41 Lifting Span

42 Aliment span to final elevation

43 Coiling Lifting Cables

44 Coupling and splicing rebar and PT Ducts

45 Pouring Closure pour

46 Stress Post-Tensioning Tendons

47 Release Lifting Cables and Transfer the Load

48 Finished Track Spans

49 Finished Track Spans

50 QUESTIONS?

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