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Published byBarbara Moore
Modified over 5 years ago
John James Audubon Bridge Main Span
Materials and Equipment Cement from Thailand Structural Steel from Japan Oscillator from Germany Wind tunnel analysis from Ontario, Canada
Main Span Sequence of Events –Construct drilled shafts –Construct footing –Construct towers –Lay deck –Attach stay cables
Drive Permanent Casing Set Permanent Casing In Frame Drive To Grade (Vibratory Hammer)
Set Shaft Template The drilled shaft template holds the casing straight as it is vibrated into the ground
Drive Permanent Casing A vibratory hammer is used to vibrate the casing into the ground
Install Oscillator Layout/Place Oscillator Base And Lock Down Place Oscillator
Install Oscillator 1. Set Base
2. Set Oscillator Install Oscillator
Drive Temporary Casing Speed has been accelerated An oscillator works like someone is opening and closing a jar (back and forth)
Footing Cofferdam Structure Piles and trestle are installed
Install Soffit Panels
Install Bracing Frame Install first tier of brace frame
Erect Pre-Cast Wall Install pre-cast walls Connect to soffit panels and first tier brace frame
Install Jacking System Install jacking system with permanent hangers Lower structure to facilitate 2 nd & 3 rd tier bracing installation
Install 2 nd and 3 rd tier brace frame. Install Additional Brace Frames
Install Follower Sheeting Install sheet pile
Lower Structure Lower structure to final elevation Lock off hangers
Pour Concrete Seal Install 8 foot concrete seal Oink
Dewater Structure Install pump. Remove water
Remove Hangers and Cut Casing Remove hangers Cut casing
Place Reinforced Pile Cap Place reinforced pile cap concrete
Place Pedestal Concrete Place pedestal reinforcing and concrete lift 1 Restrut as required
Place Pedestal Concrete Lift 2 Place pedestal concrete lift 2
Remove Cofferdam Remove sheeting Remove Bracing Patch blockouts
Build Main Span Towers Install formwork & rebar Pour concrete Raise formwork Repeat process
Build Bridge Deck
Install Segmental Sections
Bridge Segments Segments are installed in sections Cable anchorage is added Cable stays are installed for support
Build bridge in segments Install Cable Stays to support bridge Overall Method of Construction
The Finished Bridge
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Confidential. ©ARXX Corporation 2010 Insulating Concrete Forms.
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