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Repair of Full-Scale Timber Bridge Chord Members by Shear Spiking |
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| Authors: | Travis A Burgers Richard M Gutkowski Jeno Balogh Donald W Radford |
| Affiliation: | 1Doctoral Student, Dept. of Mechanical Engineering, Univ. of Wisconsin, Madison, WI 53706. 2Professor, Dept. of Civil Engineering, Colorado State Univ., Fort Collins, CO 80523 (corresponding author). E-mail: gutowsk@engr.colostate.edu 3Assistant Professor, Civil Engineering Technology, Metropolitan State College of Denver, Denver, CO 80217. 4Professor, Dept. of Mechanical Engineering, Colorado State Univ., Ft. Collins, CO 80523. |
| Abstract: | 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 predrilled 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%. |
| Keywords: | Rehabilitation Bridges wood Stiffness Fiber reinforced materials Deterioration |