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St Croix River Crossing S.P. 8221-82045 Contractor Information Meeting 15 May 2013 River Spans.

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Presentation on theme: "St Croix River Crossing S.P. 8221-82045 Contractor Information Meeting 15 May 2013 River Spans."— Presentation transcript:

1 St Croix River Crossing S.P Contractor Information Meeting 15 May 2013 River Spans

2 General Arrangement

3 Main Span  3360' single structural unit  Expansion joints at Pier 7 and East Abutment  600' extradose spans  Twin wall pier legs to address time dependent and thermal effects

4 Towers

5 Tower Sections

6

7 Main Span - Reinforcing Reinforcing Grade  Generally grade 60, except:  Verticals on crossbeam – Gr 75  Deck level stay anchor blocks Gr 75 Corrosion Protection  Generally epoxy coated except:  Pier 8 legs for 10' below knuckle – SS  Deck top slab reinforcing – SS

8 Main Span - Concrete Concrete – Substructure and Towers  Generally days, except:  Towers 24' below to 3' above crossbeam days Concrete - Deck  Generally days, except:  First 8 precast deck segments days

9 Tower – Leg Reinforcing

10 Tower Reinfrocing

11 Tower Reinforcing

12

13 Tower - Crossbeam

14 Tower – Crossbeam PT

15 Tower - Crossbeam PT

16

17 Tower Crossbeam Node PT

18 Tower Crossbeam Node Reinforcing

19

20 Pylon Crossbeam Node

21

22 CIP Pier Table

23 Upper Tower

24 Tower - Anchor Box

25 Tower Anchor Box

26 Stay Cables  Parallel Strand Stay Cable System  All stays 76 – 0.62" stays  Working at higher load than cable stays (0.52 fpu)  Live end in tower  Testing requirements per 6 th Edition of PTI Recommendations for Stay Cable Design Testing and Installation  Internal dampers required at lower end  Damping required – 2.5% log dec – confirm by testing

27 Pier 13 General Arrangement

28 Typical Deck Section

29 Deck Section at Stay Anchorage

30 Typical Deck Section

31 Deck Section at Transition

32 Tower 8 Deck Segmentation

33 Tower 9, 10 and 11 Deck Segmentation

34 Tower 12 Deck Segmentation

35 Span 14 Deck Segmentation

36 Segments Weights 7.5' segments ≤ 140 tons 8.5' segments ≤ 130 tons Typical 10' segments ≤ 165 tons 10 ' stay anchor segments ≤ 180 tons

37 Tower 8, 9, 10, and 11 Tendon Layout

38 Tendon Layout Span 14

39 Bottom Tendons – Span 14

40 Continuity Tendons Span 8

41 Typical Continuity Tendons

42 Continuity Tendons Spans 13 and 14

43 Typical Future PT

44 Typical Deck Segments

45 Typical Bulkhead

46 Typical Segment Reinforcing

47 Blisters

48 Transverse Deck PT

49 Belvederes

50 Belvederes - PT

51 Belvederes

52 Belvederes – Reinforcing

53 St Croix River Crossing S.P Contractor Information Meeting 15 May 2013 River Span - Construction

54 Pier Table Construction

55

56

57 Global Construction Scheme

58 Deck Erection Pier 8

59 Segment Lifter  Max segment weight 180 tons  Lifting frame weight 145 tons  Stressing platform 17 tons  Transporter 33 tons, 7 axles at 4'-3"

60 Segment Lifter

61 Deck Erection Pier 8

62

63

64

65

66 Deck Erection Pier 13 to East Abutment

67 Sequence Pier 13 to East Abutment

68 Deck Erection Pier 13 to East Abutment

69 Sequence Pier 13 to East Abutment

70

71 Longitudinal Infill

72

73 Stay Strut Erection

74


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