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john james audugon bridge - main span bridges

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Information about john james audugon bridge - main span bridges
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Published on April 21, 2011

Author: Marcine

Source: authorstream.com

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John James Audubon Bridge: John James Audubon Bridge Main Span Main Span: Main Span Materials and Equipment: Materials and Equipment Cement from Thailand Structural Steel from Japan Oscillator from Germany Wind tunnel analysis from Ontario, Canada Main Span: Main Span General From Pier 2E to pier 2W 3186 LF of deck 75’-10” wide 40 Drilled Shafts 136 Cable Stays Main Span: Main Span Towers 500’ high 136 cable stays 2 Crossbeams Top of tower is elevation 520’ Deck Elevation is 130’ Main Span: Main Span Deck 241,600 SF of deck 30 ton precast panel pieces 5668 CY of concrete 1656 tons of resteel 38 tons of post tensioning 1263 CY of latex overlay 2 breather joints 2 expansion joints Main Span: Main Span Tower Foundations 1W & 1E: Tower Foundations 1W & 1E 160’ x 64’ x 15’ Cap 7 by 3 pile group – 1 test pile 8’-0” diameter shafts Tower Shafts: Tower Shafts 8 ft shaft to 7’-6” approx 180-ft deep Pile tips @ Elev. -185’ to -180’ Tip grouting Trestle and Work Platform: Trestle and Work Platform Trestle and Work Platform: Trestle and Work Platform Build a trestle to create a work platform from which to install drilled shafts Trestle: Trestle Trestle and Work Platform: Trestle and Work Platform Set Shaft Template: Set Shaft Template Secondary Template Upper Template Lower Template Spud Pile Shaft Template: Shaft Template Drive Permanent Casing: Drive Permanent Casing APE 400B Vibratory Hammer Paint markings at each foot verify depth of casing as it is being installed. River bottom EL approx. -40’ East, 5’ West Drive Permanent Casing: A vibratory hammer is used to vibrate the casing down into the ground Drive Permanent Casing Drive Permanent Casing: Drive Permanent Casing Vibratory hammer driving the casing into the ground Drive Temporary Casing: Drive Temporary Casing Temporary casing is driven inside the permanent casing with an Oscillator Speed has been accelerated An oscillator works like someone is opening and closing a jar (back and forth) Oscillator: Oscillator Oscillator at Work: Oscillator at Work Oscillator Extracting a Casing: Oscillator Extracting a Casing Excavate Temporary Casing : Excavate Temporary Casing Bottom of Permanent Casing 90” Temporary Casing Hammer Grabs West - 175 East - 180 Excavate Drilled Shaft: Excavate Drilled Shaft Shaft E5 Excavation: Shaft E5 Excavation Install Reinforcing Cage: Install Reinforcing Cage Pour Tremie Concrete: Pour Tremie Concrete 41.8’ 10’ Min. Embed 30’ of temp. casing removed Maintain 4” Slump for Duration of Pour (~8 hours) Pour Tremie Concrete: Pour Tremie Concrete Base Grouting: Base Grouting The Tip Grouting Process: The Tip Grouting Process 1. Shaft Constructed 2. Base Grout Pressure Applied 3. Some Relaxation Occurs 4. Structural Load Applied Base Grouting - Verification: Base Grouting - Verification Pressure Volume Movement of Shaft Base Grouting: Base Grouting Base Grouting: Base Grouting Footing Cofferdam Structure: Footing Cofferdam Structure Piles and trestle are installed Footing Cofferdam Structure: Footing Cofferdam Structure Piles and trestle are installed Install Soffit Panels: Install Soffit Panels Top View Install Soffit Panels: Install Soffit Panels Installed Soffit Panels: Installed Soffit Panels Soffit Panels with Bracing Frame: Soffit Panels with Bracing Frame Install Bracing Frame: Install Bracing Frame Install first tier of brace frame Top View Erect Pre-Cast Wall: Erect Pre-Cast Wall Install pre-cast walls Connect to soffit panels and first tier brace frame Install Precast Wall: Install Precast Wall Install Precast Wall: Install Precast Wall Install Jacking System: Install Jacking System Install jacking system with permanent hangers Install Additional Brace Frames: Install Additional Brace Frames Install 2 nd and 3 rd tier brace frame. Install Jacking System: Install Jacking System Install jacking system with permanent hangers Lower structure to facilitate 2 nd & 3 rd tier bracing installation Install Additional Brace Frames: Install 2 nd and 3 rd tier brace frame. Install Additional Brace Frames Cofferdam Structure Bracing: Cofferdam Structure Bracing Cofferdam Structure Bracing: Cofferdam Structure Bracing Cofferdam Structure with Bracing: Cofferdam Structure with Bracing Install Follower Sheeting: Install Follower Sheeting Install sheet pile Lower Structure: Lower Structure Lower structure to final elevation Lock off hangers Lower Cofferdam Structure: Lower Cofferdam Structure Cofferdam Lowering: Cofferdam Lowering Slide 56: Lower Structure Lowered Cofferdam: Lowered Cofferdam Cofferdam Lowering: Cofferdam Lowering Base of Main Span Towers: Base of Main Span Towers Pour Concrete Seal: Pour Concrete Seal Install 8 foot concrete seal Dewater Structure: Dewater Structure Install pump Remove water Remove Hangers and Cut Casing: Remove Hangers and Cut Casing Remove hangers Cut casing Place Reinforced Pile Cap: Place reinforced pile cap concrete Place Reinforced Pile Cap Place Pedestal Concrete: Place Pedestal Concrete Place pedestal reinforcing and concrete lift 1 Restrut as required Place Pedestal Concrete Lift 2: Place Pedestal Concrete Lift 2 Place pedestal concrete lift 2 Remove Cofferdam: Remove Cofferdam Remove sheeting Remove bracing Patch blockouts Past Project Experience: Past Project Experience Bath, Maine - 2000 Bath, Maine - 2000 Main Span Towers: Main Span Towers Main Span Towers: Main Span Towers Tower Cross Section: Tower Cross Section Box sections for simple jump forming Cable anchorage on inside tower wall Tower Cable Anchorages: Tower Cable Anchorages Steel anchorage trays for upper stays Concrete corbels for lower steep cables Crossbeams connected clear of anchorage zone Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System Main Span Towers Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System Tower Form System: Tower Form System with Crossbeam Form Tower Form System: Tower Form System Tower Form System: Tower Form System Insert Rebar into form then pour concrete Tower Form System: Tower Form System Tower Form System: Tower Form System Animation Build Main Span Towers: Install formwork & rebar Pour concrete Raise formwork Repeat process Build Main Span Towers Composite Deck Cross-Section: Composite Deck Cross-Section Economy, simplicity and constructability Durability Accessibility Low maintenance Deck Anchorage: Deck Anchorage Deck Anchorage Prefab: Deck Anchorage Prefab Deck Anchorage: Deck Anchorage Cable anchorage is prefabricated on the girders before installation Deck Anchorage: Deck Anchorage Stay System: Stay System 7-Wire parallel strand Monostrand Jacking State-of-the-Art Corrosion Protection Galvanizing Grease Strand PE Coextruded HDPE Pipe Vibration suppression Begin Deck Work: Begin Deck Work Begin Deck Work: Begin Deck Work Bridge Construction: Bridge Construction Bridge Construction: Bridge Construction Bridge Construction: Bridge Construction Bridge Construction: Bridge Construction Begin Deck Work: Begin Deck Work Deck Work: Deck Work Install Girders: Install Girders Install Girders: Install Girders Install Girders: Install Girders Install edge girders Install Girders: Install Girders Install edge girders Install Girders: Install Girders Install edge girders Install cross girders Build Bridge Deck: Build Bridge Deck Truck precast deck panels onto bridge Build Bridge Deck: Build Bridge Deck Truck precast deck panels onto bridge Set panels with derrick crane Build Bridge Deck: Build Bridge Deck Truck precast deck panels onto bridge Set panels with derrick crane Install Segmental Sections: Install Segmental Sections Bridge Segments: Bridge Segments Cable anchorage is pre-attached to girders Segments are installed in sections Cable stays are installed for support Process is repeated Bridge Segments: Bridge Segments Segments are installed in sections Cable anchorage is added Cable stays are installed for support Process is repeated Bridge Segments: Bridge Segments Bridge Segments: Bridge Segments Bridge Segments: Bridge Segments Lift Deck Panels: Each panel weighs approximately 61,500 lbs. Lift Deck Panels Install Deck Panels: Install Deck Panels Install Deck Panels: Install Deck Panels Install Deck Panels: Install Deck Panels Install Deck Panels: Install Deck Panels Install Deck Panels: Install Deck Panels Install Deck Panels: Install Cable Stays as the bridge is extended Install Deck Panels Main Span: Main Span Main Span: Main Span Main Span: Main Span Main Span: (Time Lapse Camera) Main Span Overall Method of Construction: Build bridge in segments Install Cable Stays to support bridge Overall Method of Construction The Finished Bridge: The Finished Bridge The Finished Bridge: The Finished Bridge The Finished Bridge: The Finished Bridge Future Appearance - Video: Future Appearance - Video The End: The End

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