FRP Composite Girders

Webinar Series

Session One

Overview of FRP Composite Girder Technology:

A substitute for steel or concrete bridge girders.

June 6, 2022

Why is MaineDOT Adopting FRP Technology?

MDOTs shift to GFRP rebar and FRP composite Arch Bridge technologies and resulting comfort level- Why did it make sense?
Why adopt the GBeam technology so quickly? (History with UMaine and previous FRP experience.)
What are the primary concerns when adopting new technologies? How are these addressed?

Why FRP Composite Girders?

Advantages (durability, weight, shipping, installation)
Initial Development of FRP Composite Girders and proof-of-concept testing
Girder architecture, Composite Action/Shear Connection, Testing

Implementation of GBeam and Initial Deployment

Initial design methodology and improvements
Fabrication overview
Grist Mill Bridge pilot project – construction benefits

Session One Recording

Session Two

FRP Composite Girder Technology:

Evolution and Continuous Improvement of Design, Manufacturing, and Construction

June 27, 2022

Additional Development of the GBeam

Field LL Testing of Hampden Grist Mill Bridge
Continued development of shear connectors (ridged, ridged with SS steel, perhaps FRP connectors if they prove out)
Girder creep testing
Girder web shear capacity
Ongoing and planned future research

Manufacturing and Installation of GBeams

Basic elements and evolution of the manufacturing process
The future manufacturing process – pultrusion
Installations in-place, in-fabrication and planned

Questions and Answers

Session Two Recording

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2022 TIDC
Annual Conference

Implementing Transportation Innovation

August 9 – 11th
Orono, Maine

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