The addition of vertically-oriented shear spikes (fiberglass reinforced polymer rods) was shown to increase the effective stiffness of the stringers of a full-scale timber bridge chord specimen. Results found from the flexural load testing of a full-scale timber bridge chord laboratory specimen are presented. Reinforcement was provided with 19 mm diameter shear spikes bonded to the wood by an epoxy resin. The bridge chord specimen was intentionally damaged to simulate degradation. Shear spikes were then installed from the top of the member into pre‑drilled holes to provide horizontal shear resistance and to improve the flexural effective stiffness. Results from the testing showed that with the insertion of five sets of shear spikes the average flexural effective stiffness recovered in the four stringers of the chord was 91.6%.
Journal of Bridge Engineering
American Society of Civil Engineers
Copyright © 2008 ASCE
Burgers, Travis A.; Gutkowski, Richard M.; Balogh, Jeno; and Radford, Donald W., "Repair of Full-scale Timber Bridge Chord members by Shear Spiking" (2008). Mechanical Engineering Faculty Publications. 6.