Analysis on Vertical Dynamic Response of Simply-Supported Bridge Subjected to a Series of Moving Harmonic Loads

Abstract:

In this thesis, a dynamic analysis model is established that subjected to a series of moving harmonic loads, and the analytical solution of the dynamic response is deduced based on the mode superposition method. Based on this analytical solution, a program is made to calculate the vertical dynamic response of simply-supported beam. The calculation results show that the analytical solution is reasonable and correct. When the harmonic frequency is near to the fundamental frequency of the simply-supported beam, the resonance phenomenon will occur. The dynamic response of the beam will decrease as the speed increases, and the presence of damp can suppress the vibration of the bridge.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 1329-1334
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.1329
• Online since: August 2013
• Authors: Jing Feng Zhang, Xiao Zhen Li, Li Zhong Song, Chun Sheng Shan
• Keywords: Dynamic Response, Moving Harmonic Loads, Simply-Supported Beam

References

[1] Li Guohao. Stability and Vibration of Bridge Structures[M]. Beijing: China Railway Publishing House, 2002. (in Chinese).

[2] Li Xiaozhen. [D]. Chengdu: Southwest Jiaotong University, 2000（in Chinese）.

[3] Liu Dejun. [D]. Chengdu: Southwest Jiaotong University, 2010（in Chinese）.

[4] Nan Z, He X, Weiwei G. [J]. Journal of Sound and Vibration. 2008(309): 407-425.

[5] Yang Y, Yau J, Hsu L. [J]. Engineering Structures. 1997(19): 936-944.

[6] Garinei A. [J]. International Journal of Engineering Science. 2006(44): 778-787.

[7] Ray Clough , Joseph Penzien ; Wang Guangyuan etc translate. Dynamics of Structures [M]. 2nd ed (Revised Edition). Higher Education Press, (2006).