Study on the damping reduction of the safe-belt constraint system of low gravity center cable-stayed bridge

Ping Lu1, Haijun Wu2, Qing Li3, Wenxue Zhang4

1, 2College of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

3, 4College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, China

4Corresponding author

E-mail: 1495682579@qq.com, 2583921237@qq.com, 3602251892@qq.com, 4zhwx@bjut.edu.cn

Received 23 September 2017; accepted 1 October 2017

DOI https://doi.org/10.21595/vp.2017.19216

 

Abstract. The structural system with better seismic performance is one of the key to the seismic design of cable-stayed bridges. The research shows that the internal force response of floating system is small and the displacement response is large, and the seismic response of the hinged system is the opposite. However, the tower bottom moment of the fix hinged cable-bridge could be less than it of the floating system actually, because the inertia force of the girder in the hinge system would be transmitted to the tower through the connection of tower and girder. In the light of these characteristics, a new low-gravity cable-stayed bridge seismic structure system, the safe-belt constraint system, is proposed in this paper, and the seismic response characteristics are studied by ANSYS. In addition, the effect of safe-belt parameters on the vibration reduction effect of the belt system cable-stayed bridge is analyzed.

Keywords: double tower cable-stayed bridge with low center of gravity, safe-belt constraint system, seismic response, acceleration activation threshold, curb stiffness, safe-belt sliding force.

References

[1]        Fan Lichu Seismic Design. Tongji University Press, Shanghai, 1997.

[2]        Fen Linyun, Ye Aijun Study of application of seismic mitigation and isolation techniques to multi-span continuous girder bridges. Bridge Construction, Vol. 6, Issue 2005, p. 7‑15.

[3]        Ye Aijun, Hu Shide, Fan Lichu Research on a seismatic structural system of cable-stayed bridge. Bridge Construction, Vol. 4, 2002, p. 1‑4.

[4]        Denizen J., Snuffed C. F., Par Melee R. A. Seismic analysis of bridges on long piles proceedings of the american society of civil engineers. Journal of the Engineering Mechanics Division, Vol. 3, 1964, p. 223‑254.

[5]        Xie Qunhua Effect analysis of constrained system on seismic performance of long-span cable-stayed bridge. Modern Transportation Technology, Vol. 3, 2016, p. 40‑42.

[6]        Hu Qing An, Cui Gang, Liu Jian Xin Application of viscous damper to aseismatic design of cable‑stayed bridge. Highway, Vol. 8, 2006, p. 77‑80.

[7]        Yan Bin, Du Xiuli, Han Qiang, et al. Application of hybrid seismic mitigation and isolation device to seismic design of single-pylon cable-stayed bridge. Bridge Construction, Vol. 6, 2014, p. 101‑106.

[8]        Zhang Wenxue, Li Jian Zhong, Li Huai Feng Study of seismic response characteristics of low gravity center cable-stayed bridge. Bridge Construction, Vol. 5, 2007, p. 21‑23.

[9]        Zhang Wenxue, Wang Jingjing, Chen Shitong The influence of high of gravity on seismic response of cable-stayed bridges in different systems is studied. Highway, Vol. 1, 2015, p. 72‑76.

[10]     Zhang Wenxue, Li Chenghua, Yang Jinbao Earthquake resistance of cable-stayed bridge with one tower of low gravity center. Journal of Shijiazhuang Tiedao University (Natural Science), Vol. 2, 2010, p. 88‑93.

Cite this article

Lu Ping, Wu Haijun, Li Qing, Zhang Wenxue Study on the damping reduction of the safe‑belt constraint system of low gravity center cable‑stayed bridge. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 184‑191.

 

JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533