Performance of Unpretensioned Wind Stabilizing Cables in the Construction of a Cable-Stayed Bridge
Publication: Journal of Bridge Engineering
Volume 18, Issue 8
Abstract
A stabilizing cable (SC), used for mitigating buffeting vibration in a cantilevered structure of a cable-stayed bridge during construction, is normally installed with pretension. When a situation arises where only SCs are allowed in side spans, heavy counterweights in the center span are required to satisfy the force balance. The mitigating effect of unpretensioned cables was investigated using a wind tunnel in an attempt to eliminate the need for counterweights. An elastic wind tunnel test at a scale of was prepared, and a series of comparative wind tunnel tests were performed. The vertical displacement at the cantilever tip of the center span and the horizontal displacement at the top of the pylon were measured, and stabilizing effects were then estimated. An unpretensioned cable produces a nonlinear motion because of a loss of tension. A quantitative evaluation of the stabilizing effect of an unpretensioned stabilizing situation indicated that the counterweight could be removed only when a moderate level of stabilization is required for a small- or medium-sized, cable-stayed bridge.
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Acknowledgments
This research was supported by a grant (09CCTI-A052531-05-000000) from the Ministry of Land, Transport and Maritime Affairs of Korean government through the Core Research Institute at Seoul National University for Core Engineering Technology Development of Super Long Span Bridge R&D Center, and also partially supported by Integrated Research Institute of Construction and Environmental Engineering (IRICEE) at Seoul National University. The authors wish to express their sincere gratitude to Professor S. D. Kwon, the director of Korea Construction Engineering Development Collaboratory Program (KOCED) Wind Tunnel Laboratory at Chonbuk National University, Jeonju, Korea, for providing the 3D aeroelastic model and wind tunnel test facilities that enabled this study.
References
Caracoglia, L., and Jones, N. P. (2003). “Time domain vs. frequency domain characterization of aeroelastic forces for bridge deck sections.” J. Wind Eng. Ind. Aerodyn., 91(3), 371–402.
Chen, X., Matsumoto, M., and Kareem, A. (2000). “Time domain flutter and buffeting response analysis of bridges.” J. Eng. Mech., 126(1), 7–16.
Choi, S. W., and Kim, H.-K. (2008). “Design of aerodynamic stabilizing cables for a cable-stayed bridge.” Wind Struct., 11(5), 391–411.
Ernst, H. J. (1965). “Der e-modul von seilen unter berücksichtigung des durchhanges.” Bauingenieur, 40(2), 52–55 (in German).
GK Fixed Link Corporation. (2003). Design criteria for GK Fixed Link, GK Fixed Link Corp., Busan, Korea.
Kim, B.-J., Lee, S.-H., and Kim, H.-K. (2012). “Mokpo Bridge: New landmark in Mokpo city.” Struct. Eng. Int., 22(1), 29–31.
Kim, H.-K., Shinozuka, M., and Chang, S. P. (2004). “Geometrically nonlinear buffeting response of a cable-stayed bridge.” J. Eng. Mech., 130(7), 848–857.
Korean Society of Civil Engineers (KSCE). (2006). Design guidelines for cable-supported steel bridges, KSCE, Seoul, Korea (in Korean).
Matsuda, K., Hikami, Y., Fujiwara, T., and Moriyama, A. (1999). “Aerodynamic admittance and the ‘strip theory’ for horizontal buffeting forces on a bridge deck.” J. Wind Eng. Ind. Aerodyn., 83(1–3), 337–346.
Salvatori, L., and Borri, C. (2007). “Frequency- and time-domain methods for the numerical modeling of full-bridge aeroelasticity.” Comput. Struct., 85(11–14), 675–687.
Shum, K. M., Xu, Y. L., and Guo, W. H. (2006). “Buffeting response control of a long span cable-stayed bridge during construction using semi-active tuned liquid column dampers.” Wind Struct., 9(4), 271–296.
Simiu, E., and Scanlan, R. H. (1996). Wind effects on structures, Wiley, New York.
Strømmen, E. N. (2010). Theory of bridge aerodynamics, 2nd Ed., Springer, New York.
Zhang, Z., Chen, Z., Cai, Y., and Ge, Y. (2011). “Indicial functions for bridge aeroelastic forces and time-domain flutter analysis.” J. Bridge Eng., 16(4), 546–559.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 18 • Issue 8 • August 2013
Pages: 722 - 734
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Nov 28, 2011
Accepted: Jul 11, 2012
Published online: Jul 21, 2012
Published in print: Aug 1, 2013
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