Free and Ambient Vibration of Brent-Spence Bridge
Publication: Journal of Structural Engineering
Volume 123, Issue 9
Abstract
The main objective of this study is to assess the structural integrity of the double-deck through-truss Brent-Spence bridge when subjected to a seismic event from the New Madrid, Wabash Valley, or Anna seismic zones. To achieve this, the scope of work was divided into several tasks as follows: field testing of the main bridge, analytical modeling, determination of the site-specific ground motion, and seismic response analysis. This paper deals with the first two tasks. The ambient vibration properties of the main bridge were determined through field testing under traffic induced excitation. The purpose of measuring the ambient vibration properties was to determine the mode shapes and the associated natural frequencies. These vibration properties were subsequently used as the basis for calibrating the finite-element model for seismic response analysis. A three-dimensional finite-element model of the main bridge was developed for the free vibration analysis. The seismic response analysis using this calibrated finite-element model is presented in the second part of this two-part paper.
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References
1.
Abdel-Ghaffar, A. M., and Scanlan, R. H.(1985). “Ambient vibration studies of Golden Gate bridge. I: Suspended structure.”J. of Engrg. Mech, ASCE, 111(4), 463–482.
2.
Bowles, J. E. (1988). Foundation analysis and design, 4th Ed., McGraw-Hill Inc., New York, N.Y.
3.
Harik, I. E., Allen, D. L., Street, R. L., Guo, M., Graves, R. C., Harison, J., and Gawry, M. J. (1983). “Seismic analysis of the Brent-Spence bridge.”Kentucky Transp. Res. Ctr., Rep. No. KTC-93-15, Univ. of Kentucky, Lexington, Ky.
4.
Harik, I. E., Allen, D. L., Street, R. L., Guo, M., Graves, R. C., Harison, J., Gawry, M. J. (1997). “Seismic evaluation of the Brent-Spence bridge.”J. Struct. Engrg., ASCE, 123(9).
5.
Ketchum, M. A., and Seim, C. (1990). “Golden Gate bridge seismic evaluation.”Rep. Prepared by T. Y. Lin, Int., for Golden Gate Bridge, Highway and Transportation District, San Francisco, Calif.
6.
Kohnke, P. C. (1991). ANSYS engineering analysis system—theoretical manual. Swanson Analysis Systems, Inc., Houston, Pa.
7.
Lam, I. P., and Martin, G. R. (1986). “Seismic design of highway bridge foundations.”Rep. No. FHWA/RD-86/102 Prepared by Earth Technol. Corp. for Federal Highway Administration, McLean, Va.
8.
Lam, I. P., Martin, G. R., and Imbsen, R. A. (1990). “Modeling of bridge foundations for seismic design and retrofitting.”Transp. Res. Rec. 1290, 113–126.
9.
Liu, W. D., and Imbsen, R. A. (1990). “Seismic evaluation of Golden Gate suspension bridge and tower structure.”Rep. Prepared by Imbsen and Associates, Inc., subconsultants to T. Y. Lin, Int., for Golden Gate Bridge, Highway and Transportation District, San Francisco, Calif.
10.
“Performance of structures during the Loma Prieta earthquake of October 17, 1989.” (1990). Lew, H. S., ed., NIST special publication 778, U.S. Dept. of Commerce, Nat. Inst. of Standards and Technol., Gaithersburg, Md.
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Copyright © 1997 American Society of Civil Engineers.
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Published online: Sep 1, 1997
Published in print: Sep 1997
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