Fiber Reinforced Composite Bridge Deck
My thesis project studied the feasibility of using a fiber reinforced polymer bridge deck developed by Strongwell of Bristol, TN. The deck is made from off-the-shelf structural members from their Extren line of products. The deck was assembled at their plant in Bristol and then shipped to the Virginia Tech Structures lab in Blacksburg, VA. We have fitted the deck with various instruments to measure the effects of loads upon the deck.
You can download my thesis online in Adobe .pdf format at Virginia Tech’s Library Web Site:
Lab Testing An FRP Deck Specimen.
This is looking at the end of the deck while I have the loading frame and actuator in place. This is loading the West span of the FRP deck.
Actuator Applying Load To Deck
Here is a closer look at the hydraulic actuator in place. This is loading the center of the West span, whereas above is loading the edges with a spreader beam.
The Field Test Site
This is looking South on the ramp to the truck weigh station off of I‑81. The dark marks along the bed are the grout beds for the support beams, which can be seen in place below.
Placing The Deck at the Field Site
Here is the deck being lowered on to the support beams. You can see lots of pipes and wires on this end. Those are used for testing the deck while in place.
Monitoring Laboratory Load Tests
A picture taken by my co-researcher, Aixi Zhou. Dr. Zhou is currently researching composites in Swizterland and learning to ski. Meanwhile, I’m still living in Virginia. All the wires you can see in the foreground are connected to strain gages throughout the deck, which monitor very small changes in length. By the way, isn’t odd that engineers spell gage without a “u”?
Designers and Producers
- Strognwell’s Special Products Page — Check out Bridges & Decks section for some info on this and other projects.
- Virginia Polytechnic Institute & State University
- Via Dept. of Civil Engineering
- Dr. Thomas E. Cousins
- Dr. Jack Lesko