Award Date
1-1-2002
Degree Type
Thesis
Degree Name
Master of Engineering (ME)
Department
Civil and Environmental Engineering
First Committee Member
Samaan G. Ladkany
Number of Pages
150
Abstract
This thesis presents the results of analytical studies conducted on the off ramp structures of the Las Vegas downtown viaduct. In the first stage, the moment, shear and deformation capacities of the columns were determined by moment-curvature analysis. Then, the existing design of the bridge columns was compared to the requirements of the current bridge design codes. In the second stage, the moment, shear and deformation demands on the columns due to a strong earthquake were determined using the seismic provisions of the current bridge design codes. In the third stage, non-linear three dimensional finite element models of the off ramp bridges were used to simulate the seismic response of the off-ramp structures to the Sylmar and the ATC earthquakes. The structures response was analyzed under 50%, 100% and 200% intensities of the earthquakes. In the third and final stage, the demands calculated in second and third stages were compared to the calculated capacities of the columns. It was determined that all the columns analyzed required seismic retrofit to comply with the existing codes. Complete retrofit designs of the columns were determined using Carbon Fiber and Glass Fiber Reinforced Polymer jackets, using the California Department of Transportation retrofit design guidelines.
Keywords
Assessment; Downtown; Las Vegas; Nevada; Ramp; Seismic; Structures; Vegas; Viaduct; Vulnerability
Controlled Subject
Civil engineering
File Format
File Size
3225.6 KB
Degree Grantor
University of Nevada, Las Vegas
Language
English
Permissions
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Repository Citation
Hasan, Mohammad Ohidul, "Seismic vulnerability assessment of off-ramp structures of the Las Vegas downtown viaduct" (2002). UNLV Retrospective Theses & Dissertations. 1425.
http://dx.doi.org/10.25669/fbjy-yzsc
Rights
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