Sliding Resistance of Main Cables in Double-Cable Multispan Suspension Bridges
Publication: Journal of Bridge Engineering
Volume 22, Issue 3
Abstract
Sliding resistance of the main cable is of the biggest concern when designing multispan suspension bridges. This paper presents a study on the layout form and sliding-resistance stability of the main cable in a double-cable multispan suspension bridge. It proposes a “top cable to bottom cable” layout, based on which analytical formulas for calculating the sliding-resistance coefficient of the double-cable have been derived. The formulas were verified by finite-element models (FEMs), and the results showed good agreement. The effects of major design parameters on the sliding resistance of the main cable were studied. Analysis shows that the top cable to bottom cable layout can effectively improve the sliding resistance of the main cable, and the bottom cable of the loaded span and the top cable of the unloaded span control the antisliding design of double cable; the sliding resistance of the main cable decreases along with an increase in the ratio of tower stiffness to cable stiffness; the influence of the sag-to-span ratio on the sliding resistance of the main cable is related to the tower stiffness; and the sliding resistance of the main cable increases with an increase in the ratio of dead load to live load.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This study was supported by the National Natural Science Foundation of China (NSFC) (Grant 51608440). The authors would like to express their gratitude for the financial assistance.
References
Chai, S., Xiao, R., and Li, X. (2014). “Longitudinal restraint of a double-cable suspension bridge.” J. Bridge Eng., 06013002.
Choi, D., Gwon, S., and Na, H. (2013). “Simplified analysis for preliminary design of towers in suspension bridge.” J. Bridge Eng., 04013007.
Forsberg, T. (2001). “Multi-span suspension bridges.” Int. J. Steel Struct., 11(1), 63–73.
Gimsing, N. J. (1997). Cable supported bridges concept and design, Wiley, New York.
Hasegawa, K., Kojima, H., Sasaki, M., and Takena, K. (1995). “Frictional resistance between cable and saddle equipped with friction plate.” J. Struct. Eng., 1–14.
Midas/Civil [Computer software]. Midas Information Technology Company, Seoul.
Takena, K., Sasaki, M., Hata, K., and Hasegawa, K. (1992). “Slip behavior of cable against saddle in suspension bridges.” J. Struct. Eng., 377–391.
Wang, X., Chai, S., and Xu, Y. (2016). “Deformation characteristics of double-cable multi-span suspension bridges.” J. Bridge Eng., 06015007.
Xiao, R. C. (2013). Bridge structural systems, China Communications Press, Beijing.
Yoshida, O., Okuda, M., and Moriya, T. (2004). “Structural characteristics and applicability of four-span suspension bridge.” J. Bridge Eng., 453–463.
Zhang, J. Q., et al. (2011). “Overview of multi-pylon multi-span suspension bridge.” J. Highway and Transp. Res. Dev., 28(9), 30–45.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 22 • Issue 3 • March 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Mar 15, 2016
Accepted: Oct 13, 2016
Published online: Nov 10, 2016
Published in print: Mar 1, 2017
Discussion open until: Apr 10, 2017
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.