Bridge Renewal Construction Work - A9 Motorway - Reinforcement Of The St Geniès Viaduct - Pi99. Works Market For Additional Pre -Contribution Strengthening, Replacing Support Devices, Tpc Reservoir Devices And Pavement Joints. The Two Aprons Of The Book Are Concerned (Direction 1: Length 209M And Direction 2: Length 185M). They Cross A Railway Under Operation: Work To Be Carried Out Under Sncf Operating Constraints. As An Indication, The Work Relates To: -Massifs Anchor Nailed By Prestressing Bars (Diameter 40Mm, Approximately 120 Units); -Index Longitudinal Additional Prontent: Cables Made Up Of Tounds Greased Housed In Watered General Collective Sheaths Injected With Cement Coulis (2 Pairs Of Cables 23T15s Of Approximately 205M, And 2 Pairs Of 17T15s Cables Of Around 180M In Length); -Renforcements By Carbon Composite Glued To The Beam Underside At The Coupling Joints (Approximately 20 X 1.5M² Of Areas To Be Strengthened); -Remplacement Of Support Apparatus By Cylinders, With Prior Strengthening Of Support Heads -New Support Apparatus In Powl Elastomer: 24 Units; -Remplacement Of The 4 Pavement Joints Of The Structure: Breath 65Mm, 52Ml In Total; -Remplacement Of Tpc Retention Devices: Replacement Of Existing Slides By Level H2 Metal Retention Devices On Structure, And Connections On Gs4 Slides Outside The Work (Length Of Retention Devices On Structure Between Pavement Joints: 209+185 = 394Ml Approximately); -Remplacement Of The Metal Quailbotis In Tpc (420 M²)
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