Open Access. Powered by Scholars. Published by Universities.®
Civil and Environmental Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Civil and Environmental Engineering
Repair Of Full-Scale Timber Bridge Chord Members By Shear Spiking, Travis A. Burgers, Richard M. Gutkowski, Jeno Balogh, Donald W. Radford
Repair Of Full-Scale Timber Bridge Chord Members By Shear Spiking, Travis A. Burgers, Richard M. Gutkowski, Jeno Balogh, Donald W. Radford
Mechanical Engineering Faculty Publications
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 …
Erosion Function Apparatus, Ryan Larsen
Erosion Function Apparatus, Ryan Larsen
The Journal of Undergraduate Research
The Erosion Function Apparatus (EFA) test uses site-specific soil samples acquired via thin-walled tubes to generate the erosion rate and shear stress which is plotted to create an erosion plot. The information produced by the test can help an engineer accurately determine the depth of scour as a function of time for bridge design, and thereby determine the depth a foundation system should be constructed. During EFA testing, a data acquisition system records the velocity and amount of soil eroded. This data is used to calculate the Reynolds Number, friction factor, erosion rate, and shear stress. Once the data has …
Particle Motion On A Plane Slope Under Spilling Breaking Waves, Jennifer Nelson
Particle Motion On A Plane Slope Under Spilling Breaking Waves, Jennifer Nelson
The Journal of Undergraduate Research
The experiments discussed in this paper involve the motion of discrete solid particles on a plane slope under spilling breaking wave conditions. Particle Image Velocimetry was used to capture images of seeder particles in water so the motion of the fluid particles and solid particles could be traced. The images produced from the experiments have two phases. Since the behavior of the water and the sediment particles must be studied individually, the two phases of the image must be separated. A series of functions in MATLAB allows the two-phase image to be separated into two images—one containing only the sediment …