Element Modeling and Dynamic Property Parameters Analysis of Self-Anchored Suspension Bridge

H. B. Zhang

Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023,China

Cite this paper
H. B. Zhang, “Element Modeling and Dynamic Property Parameters Analysis of Self-Anchored Suspension Bridge”, Journal of Mechanical Engineering Research and Developments, vol. 39, no. 1, pp. 39-45, 2016. DOI: 10.7508/jmerd.2016.01.006

ABSTRACT: In order to research the affection factors of Dynamic Properties of Self-anchored Suspension Bridge, four different conditions models are set up. Firstly the paper compares three methods of calculating dynamic properties of bridge.  Based on the comparison and according to the structural property of Suspension Bridge, the three-dimension FE dynamic model is set up:  the ridge mode is adopted to simplify the structure of bridge deck system, the analysis on simulation of other parts of bridge is conducted to be counted into geometric stiffness. The method and standard on adjusting the cable force of Suspension Bridge is acquired by static calculation, and the calculation analysis about bridge dynamic property is conducted to obtain the bridge frequency and vibration. At last, the paper concludes the factors of affecting dynamic property of Suspension Bridge from contrast calculation and analysis of dynamic property according to four different conditions: (1) Constant effect of gravity stiffness;(2) Not calculation of gravity and initial stress of main cable;(3) Including suspender’s initial stress;(4) Not including of stress stiffening. The results show that initial stress of main cable and suspension cable is the important parameter to affect structural stiffness.

Keywords : Dynamic property; Mode; Natural frequency; Suspension bridge.

[1] R.F. Chen. The large-span suspension bridge theory. Chengdu:  Southwest Jiaotong University Press, 1994.
[2] L. Xu,J.J. Jiang,J. Guo. Modal analysis of humen suspension bridge. China Civil Engineering Journal, 2002,35(1): 25-27.
[3] Sh. Feng,Y.Q. Xiang,X. Xie. Dynamic characteristics and multi-support seismic response analysis of a super large span suspension bridge. Journal of Highway and Transportation Research and Developmen, 2005,22(8): 31-35.
[4] H.P. Pang,J.G. Wang,F. Qian. Analysis of vehicle-bridge interaction of long span suspension bridges. Journal of Hefei University of Technology,2011,34(1): 114-118.
[5] H. Bai, Q.A. Hu, Zh.T. Hu, J.X. Liu. Wind-resistance stability of a narrow steel truss girder suspension bridge. Journal of Vibration and Shock,2010,29(4): 155-159.
[6]  F.W. Huang, X.F. Xu, G.W. Tang, X.F. He. Dynamic properties comparative analysis for zhongxian changjiang river bridge. Technology of Highway and Transport, 2000, 1: 16-19.
[7] L.D. Zhu, H.F. Xiang, Y.L. Xu. Triple-girder model for modal analysis of cable-stayed bridges with wrapping effect. Engineering structures, 2000(22): 1313-1323.
[8] Ch.Sh. QU, K.F. Zheng, B. Pan. Vibration properties and response spectrum analysis for single-tower self-anchored suspension bridge. Journal of Hunan Institute of Engineering, 2007, 17(4): 84-87.
[9] W.M. Zhang, Y.J. Ge. Refinement analysis of dynamic characteristics of suspension bridge with triple tower and double main spans. China Journal of Highway and Transport, 2014, 27(2): 70-76.
[10] H. Wang, Ai.Q. Li, Y.D. Yang, J.H. LI. Influence of central buckle on dynamic behavior of long-span suspension bridge. China Journal of Highway and Transport, 2006, 19(6): 49-53.
[11] Sh.J. Sun, Sh.W. Liu. Dynamic characteristics and parameter analysis of super-Long span suspension bridges. Highway, 2007,11: 41-45.
[12] Ch.K. Jiao, Ai.Q. L, H. Wang. Analysis on parameter of dynamic property of triple-pylon suspension bridge. Journal of Highway and Transportation Research and Development, 2010, 27(4): 51-55.
[13] J. Sun, Ai.Q. Li, Y.L. Ding, Y. Den. Research on correlation of modal frequency and seasonal temperature of runyang suspension bridge. Engineering Mechanics, 2009,26(9): 50-55.
[14] ZH.J. Li, Ai.Q. Li, X.L. Han. Dynamic analysis and experimental study of variations of the dynamic parameters of the runyang suspension bridge. China Civil Engineering Journal, 2010,43(4): 92-98.
[15] Z.J. Liu, Jin H. Li. Effect of initial stress of main cable on dynamic characteristics of suspension bridge. Computer Aided Engineering, 2009, 18(4): 37-40.
[16] L.CH. Fan. Seismic design of bridge, edtied by Tongji University Press, Shanghai, (1997).
[17] Y.X. Yang, A.R. Yang, H.F. Xiang. Problems of nodal rigid zone in modeling bridge structures for dynamic analysis, edited by Civil Engineering Journal, 2000,34: 14-18.
[18] ANSYS dynamic analysis guide:  Beijing Branch of ANSYS company  (1996) .
[19] J.L. Xu, Zh.F. Xiang. Discussing gravity stiffness of suspension bridge, Journal of Chongqing Jiaootng Instistute, 2000(19): 71-74.
[20] D.W. Peng, Y.M. Chen. Modal analysis of suspension bridge with stiffened reinforced concrete Truss. Earthquake Engineering and Engineering Vibration, 2001(21): 40-45.
[21] The Edit Group,China. Anti-wind design guide of highway bridge, Renmin Communication Press, Beijing, (1996).