Date of Award
2012
Publisher
North Dakota State University
Document Type
Thesis
Degree Awarded
Master of Science (MS)
Program
Civil Engineering
Department
Civil and Environmental Engineering
College
Engineering
Faculty Advisor
Kim, Jimmy
Description
This research program investigates the performance of a steel truss bridge when subjected to both localized web damage and a subsequent post-tensioned strengthening approach. The investigation utilizes a combined approach involving an experimental scale model bridge and a numerical computer model generated using the commercial finite element software RISA 3-D. The numerical model is validated using test data and further extended to parametric studies in order to investigate the theoretical load rating, strain energy, load redistribution, mode shapes and frequency of the bridge for control, damaged and strengthened states. The presence and severity of damage are found to significantly influence the global safety and reliability of the bridge. Also, higher order modes are more susceptible to changes in shape and frequency in the presence of damage. A recovery of truss deflection and a reduction of member forces are achieved by the proposed strengthening method.
Recommended Citation
Brunell, Garrett Floyd, "Functionality of a Damaged Steel Truss Bridge Strengthened with Post-Tensioned CFRP Tendons" (2012). Civil and Environmental Engineering. 5.
https://digitalcommons.ndsu.edu/civil-environmental-eng/5
Rights
NDSU Policy 190.6.2
Rights Link
https://www.ndsu.edu/fileadmin/policy/190.pdf
Handle Identifier
https://hdl.handle.net/10365/26559