2026-09-21T10:48:32Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/83315 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

2006 2006 Nicholas P. Jones Mashnad, Mehedy 2015-09-25T21:04:14Z 2015-09-25T21:04:14Z 10000-01-01 The goal of this research was to develop a suitable model, complementary to those existing for flutter and buffeting, which improves current techniques for the prediction of vortex-induced vibration of non-circular sections representative of bridge decks. Wind tunnel experiments of six spring-mounted rigid section models were performed in order to further advance the understanding of the mechanism of vortex-induced vibration of non-circular sections. A practical semi-empirical model that captured the salient features observed in the above investigations was developed and a procedure for extracting the aeroelastic coefficients of the model was developed. The mathematical model developed for a spring-mounted rigid section was extended for flexible, three-dimensional prototype structures through modal analysis. Additionally, spanwise loss of correlation of the aeroelastic coefficients was incorporated in the model. Long-term, full-scale data measured on the Fred Hartman Bridge (a cable-stayed bridge) were analyzed to detect incidents of vortex-induced response using several criteria that were proposed in this study. The full-scale data were also used to identify the modal damping ratio and frequency of the bridge. Finally, the vortex-induced response of the Fred Hartman Bridge was predicted using the analytical model; the predicted responses demonstrated good agreement with the full-scale responses. Made available in DSpace on 2015-09-25T21:04:14Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3250288.pdf: 8201805 bytes, checksum: c63750fb9cc44fd88414cd1e43c78353 (MD5) Previous issue date: 2006 Embargo set by: Seth Robbins for item 84596 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 261 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. http://hdl.handle.net/2142/83315 (MiAaPQ)AAI3250288 eng Engineering, Civil Modeling Vortex -Induced Vibration of Long -Span Bridges text Civil Engineering Civil Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.