Bridge Structural Rehabilitation Using FRP Laminates South Santiam River Quartzville Road, Linn County Linn County Road Department 2011 Cooperative Partnerships Making Linn County a Better Place to Live
Bridge Structural Rehabilitation Using FRP Laminates South Santiam River, Quartzville Road, Linn County Projects may be initiated with thoughts, but will only be developed and completed with a Team Linn County Engineering Daineal Malone, Project Manager Wayne Mink, PE, Civil Engineer Chuck Knoll, PE, County Engineer David Evans and Associates Jim Bosket, PE, Bridge Inspection, Design Guido Portier, PE, Technical Support Kelly Burnell, Design, Construction Inspection Joel Howie, PE, Project Manager Mike Reynolds, PE, Contractor - Pioneer Waterproofing Co, Inc. Neil Antonini, Project Manager Kelly Smith, Contractor Superintendent Linn County Bridge Maintenance Operations Martin Harding, Supervisor
Linn County Road Department Project Manager, Daineal (left side) with Engineering Intern
Quartzville Road Bridge October 2008
Quartzville Road Bridge October 2008 Looking to the West from the Bridge Great view with visits
BRIDGE INFORMATION BRIDGE CONSTRUCTED IN 1963 - USCOE BRIDGE CONSTRUCTION: 4-100 ft SPANS SUPPORTED BY BENTS WITH CROSS BEAM CONFIGURATION WITH TWO PIERS CONCRETE CROSS BEAMS WERE NOT ADEQUATELY REINFORCED WITH STEEL Actual Load Rating 2008 - Log Truck Configuration 34.4 tons with 1.4 RF for Type 3-3 Train and Legal Lane UNDER DESIGNED CROSS BEAMS CAUSED: Structural Shear Type Cracking of Concrete Girder from Shear Stress Cracking of Reinforced Concrete Diaphragms from Bending Moment to Cross Beams.
First Step Thorough Inspection of the Bridge
Mid- Span Diaphragms were OK
Diaphragms at Bents had concrete failure at corners and Cross Beams had Shear Cracks
Diaphragms at Bents had concrete failure at corners and Cross Beams had Shear Cracks Inspection Notes
ENGINEERING DESIGN Repair Diaphragms and Strengthen (Reinforce) Crossbeams
Work required on three interior bents
Design Detail
Concrete Repair Detail
Fiber Reinforced Polymer (FRP) Design
Design Detail
Concrete Repair at Exposed Rebar
Selection of materials of Construction from the Qualified Products List
Preparation of Test Strip as to Tensile Strength
Report on Test Strip as to Tensile Strength
Access & Work Platform to Cross Beam to Construct Repairs
Containment of Work Area
Preparation of Concrete Surface and Repair of Diaphragms
Concrete Repair Preparation
Concrete Repair Preparation
Inspection of Reinforced Concrete Beam
Concrete Repair Preparation Remove Spalled Concrete and Clean Surface
Concrete Repair Preparation Remove Spaled Concrete and Clean Surface
Concrete Repair Preparation Placement of Perimeter Gasket
Concrete Repair Preparation Placement of Forms
Concrete Repair Preparation Mixing of Concrete Cement
Pumping for Concrete Repair of Diaphragm Hand Pump
Pumping for Concrete Repair
Pumping for Concrete Repair
Removal of Forms
Bridge Beam Diaphragm - After Removal of Form
Bridge Beam Diaphragm - After Removal of Form
Application of FRP to Concrete Beams
Injection of Epoxy into Cracks Sorry No Photo of This
Materials of Construction Primer and MBRACE PUTTY
Preparation of Surface with Cement Mix
Mixing of Saturant
Application of Fiber Reinforced Laminate Across Bottom of Beam
Application of Fiber Reinforced Laminate Around Bottom and Sides of Beam
Application of FRP
Placing Final Coat over FRP
Quality Control Work
Quality Control Work
Bond Testing of FRP to Concrete Surface Preparation/Isolation of Test Area
Placement of Test Device to FRP Surface
Testing for Tensile Strength
Bond Testing Attachment Devices after Bond Test Note layer Blue Layer of FRP between Concrete and Device
Completed Repair of Diaphrams and Cross Beam before Painting
Repairs of Diaphram and Outer Cap
Paint Coating over FRP surface
Completed Work on Middle Pier
View of Completed Repair Work
Completed Engineers Load Rating Strength of Cross Beam and Bridge Increased by 25% Contract Cost $160,000 Engineering Design and Inspection $60,000
THANK YOU Chuck Knoll, PE Linn County Engineer