PAUL ZICK, PE NORTH SHORE CONSTRUCTORS JV
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1 NORTH SHORE CONNECTOR TUNNELS AND STATION SHELL LIGHT RAIL PROJECT PAUL ZICK, PE NORTH SHORE CONSTRUCTORS JV
2 North Shore Connector Alignment 7300 lf Extension to existing 25 mile system 18 Contracts $435 Million
3 Funding $ 435 Million 80% 17% 3%
4 Project Location Future- to Airport North Shore Connector Light Rail Expansion 004 New Gateway Station 003 EXISTING GATEWAY STATION Existing Light Rail System
5 Project Team Owner Port Authority of Allegheny County Construction Manager TriGold Jacobs Civil HDR Kwame
6 Project Team Design Engineer DMJM Contractor North Shore Constructors JV Obayashi Corp. Trumbull Corp.
7 What we are building Two Contracts Combined Contract Value - $156,500, Time NTP Oct 2, Tunnels 1243 days Feb 26, Station / C&C 870 days Feb 18, 2009
8 Four Major Structure Types Boat Section 340 lf SOE - Steel Soldier Piles and Wood Lagging g Cut and Cover 1200 lf SOE - Cement Deep Soil Mixing i Wall (CDSM) SOE Cement Bentonite Wall (CB) Top Down Construction - Station SOE - Slurry Wall Bored Tunnel 2240 lf SOE - Precast Concrete Segmental Lining i
9 Boat Section Soldier pile and lagging Excavation 0 to 35 feet Soldier Piles and Wood Lagging Above or at the water table Deep Wells Walls and Waterproofing EXISTING SOILS
10 Boat Section - SOE - Soldier Piles & Lagging Soldier Piles and Lagging
11 Cut & Cover SOE CDSM Walls 60 +/- BACKFILL CDSM Walls Cut off ground water ROCK
12 Cut & Cover / Launch Pit CDSM Walls
13 Cut & Cover / Launch Pit - CDSM WALLS In place soils mixed with Bentonite Slurry going down Insert Steel Soldier Piles Cement Slurry mixed going up
14 CDSM SOE Drill Rock Socket
15 CDSM WALLS Temporary Bridge
16 Excavation / Mud Slab / WP/ Base Slab ROCK
17 Structural Concrete Waterproofing ROCK
18 Structural Concrete Cut and Cover
19 Backfill BACKFILL ROCK
20 Bridge to hold the Bridge Support two Bents
21 Cut & Cover Instrumentation Instruments Stain gauges Weather Tilt Meters Motorized Total Station
22 Underpinning SR-65 Drilled Pier Drilled Pier
23 Underpinning SR-65 ROCK
24 Underpinning SR-65 Drilled Pier
25 Underpinning SR-65 ROCK
26 Underpinning SR-65 ROCK
27 North Side Station Shell
28 North Shore Station - Slurry Walls SEA PARKING GARAGE Concourse
29 North Shore Station - Slurry Walls
30 North Shore Station Slurry Walls DESANDING Pi Primary Excavate Slot Panel Secondary Panel Pi Primary Panel Pi Primary Panel
31 North Side Station Slurry walls Concrete Pi Primary Panel Secondary Tremie pipe Panel Rebar Pi Primary Panel Secondary Panel Pi Primary Panel
32 Slurry Walls - Rebar Cage
33 North Side Station Top Down ROCK
34 North Side Station Pour Roof Slab Roof Slab ROCK
35 Excavate to Concourse Backfill Roof Slab CONCOURSE ROCK
36 Excavate to Concourse CONCOURSE Soldier Backfill Piles installed by building Roof Slab contractor ROCK
37 Excavate to first row of struts Backfill Roof Slab CONCOURSE ROCK
38 Station Roof Slab Excavation 60 ft 40 ft
39 Excavate to Invert Pour Base Slab Backfill Roof Slab CONCOURSE SLAB ANCHORS ROCK
40 Station Ground Anchors Ground Anchors
41 Construct Platform & Deck Backfill Roof Slab CONCOURSE ROCK
42 TBM Launch Pit - SOE CDSM WALL
43 TBM Launch Pit - SOE Tie Backs
44 Launch Pit - SOE Tie Backs TIE BACKS TBM TIE BACKS ROCK
45 Ground Improvement - Jet Grouting
46 Launch Pit - Jet Grout Jet Grout column construction Drill Down Grout bottom up
47 Launch Pit Entrance Packing Soft Eye
48 TBM Move to Launch Pit
49 TBM Move to Launch Pit 150 feet fully assembled
50 Launch Pit TBM Launch JET JET GROUT GROUT 1 3 2
51 Launch Pit Structure Work JET GROUT
52 Stanwix St. Receiving Pit Location GATEWAY II HORNE BUILDING RECEIVING PIT
53 Ground Improvement - Jet Grout Receiving Pit 75% COVERAGE 100% 100% Coverage 6 Around Tunnel
54 Ground Improvement - Jet Grout 75% HORNE BLG. Minimize Angular Distortion due to ground loss
55 Jet Grouting Stanwix Street
56 Stanwix Street Receiving Pit CB Wall
57 Bored Tunnels Tunnel Boring Machine Launch Pit NORTH SHORE TBM Tunnels 2200 lf SOUTH SHORE Receiving Pit
58 Bored Tunnel Section PRECAST SEGMENT LINING Segment Lining 20 inside diameter CAST IN PLACE INVERT
59 TBM Tunnels Slurry Pressure Balance TBM (SPBTBM) Mixed Shield (Soft Ground and Rock) Working Pressure 3 bar
60 Mining Cycle Mine 4 & Grout Mine 4 GROUT MAINTAINED GROUT MAINTAINED BEHIND SHIELD
61 Mining Cycle Install 4 Segment Ring Build 4 Ring
62 Mining Cycle Ring Complete - Mine Mine 4 GROUT MAINTAINED GROUT MAINTAINED BEHIND SHIELD
63 Segment Grouting Segments Grout Nozzle Grout
64 TBM SLURRY MIX SHIELD 22-9
65 SPTBM Mixed Shield
66 Slurry TBM 22-9 dia (6.92 m) inch twin disk cutters 20 - Scrapers Bucket lips 3 - Wear detection devices rpm Left or Right
67 Cutting Tools After first tunnel Disk Cutters Scrappers Bucket Lips
68 Rock Crusher
69 TBM Assembly Man Locks 3 Bar (45 psi) Material Lock
70 Cutter Head Drive Motors hp Total hp Variable Frequency Drive (VFD) 480 v AC rpm (l or r) Main bearing 85ft 8.5
71 TBM Rear of Middle Shield 5 Cylinders 4 Steering Groups 6 Cylinders 7 Cylinders
72 TBM Rear of Middle Shield Propel Cylinders - 24 Piston Diameter mm Rod Diameter mm Max Stroke mm Advance force kn (4,296 tn)
73 TBM Operation Excavation Chamber Working Chamber Hydrostatic and Soil Pressure Slurry In Slurry Out
74 TBM Operation Plan SLURRY IN 455 hp PUMP SLURRY OUT 2 EA hp PUMPS
75 Slurry Separation Plant Plant Capacity 1000 m 3 /hr
76 Segment Erector Hydraulic telescopic arm type 6 ranges of movement Telescope Rotation ti Travel Independent Roll & Yaw Controlled by joy stick
77 Segment Erector Thrust rams retracted 4-6
78 Segment Installation BOLT Segment Erector
79 Key Segment Installation TBM Shield
80 Key Segment Installation MOVE OUT KEY SEGMENT MOVE FORWARD
81 TBM Mining Start North Side SOUTH SHORE NORTH SHORE Equitable Resources Building Soft Ground
82 Fluvioglacial Material Gravel 40% - 57% Sand 50% - 38% Fines 10% - 5% Cobbles - up to 2
83 TBM Mining - River Crossing SOUTH SHORE NORTH SHORE Equitable Resources Building Mixed Face
84 TBM North River Wall Alluvium Fluvioglacial Claystone Siltstone
85 TBM North River Wall - Grouting Alluvium Fluvioglacial Claystone Siltstone
86 River Crossing SOUTH SHORE NORTH SHORE Equitable Resources Building Rock
87 River Crossing 25 feet ALLEGHENY RIVER 22 feet RIVER SILTS (ALLUVIAL) ) Top of Rock FLUVIOGLACIAL 10 feet SILTY SHALE (5,400 11,800 psi) COAL CLAYSTONE (200-4, psi) SILTSTONE (3,400-11, psi)
88 River Crossing SOUTH SHORE NORTH SHORE Well Horne Blg. Equitable Resources Building Jet Grout Soft Ground Mixed Face
89 TBM Guidance System VMT Total Station Operator s Display 80 mm Target
90 Precast Segments Universal Ring Six pieces + Key 4 Long 20 ID Bolted Two tapers 2-3/8 & 1-5/8
91 Segment Rebar Cages
92 Seg Plant cycle 4 rings X 2/ day
93 Segment Finishing Line Rotate Segments curve up Repair Surfaces Add Gasket Add Joint Packing Stack in reverse order of installation
94 Secondary Steam Curing 5 day Secondary Cure 8000 psi
95 Multi Purpose Vehicle (MVP)
96 Multi Purpose Vehicle (MVP)
97 Heading Segment Unloading
98 Heading Segment Unloading
99 Segment Erection
100 Tunnel Infrastructure Temporary Lighting 50,000 CFM Ventilation 2-4 water 8 Discharge Walkway
101 First Tunnel to Receiving Pit - July 10, 2008 Soft eye Fiberglass piles
102 First Tunnel to Receiving Pit - July 10, 2008 Containment Wall
103 TBM U-Turn
104 TBM U-Turn- Rotate 180 deg
105 TBM U-Turn- Rotate 180 deg
106 TBM U-Turn- Rotate 180 deg
107 TBM U-Turn- Rotate 180 deg
108 Invert Clean Up
109 Invert Placement
110 Thank You Questions?
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