Vertical Load-Carrying Natural Frequency of Railway Double-Track Pre-Stressed Concrete Continuous Bridge

Abstract:

The railway double-track continuous bridge vertical load-carrying frequency is theoretical derived with the vehicle-bridge system mode1. The vertical load-carrying frequencies of the 40 m+4×72 m+40 m party pre-stressed concrete continuous box-girder bridge are calculated, when two trains with 20 same high-speed passenger vehicles are traveling on the bridge from both ends. The change regularity of this double-track continuous bridge vertical load-carrying natural frequency with two trains on it is similar with that of the single-track simply supported bridge and this bridge as one train on it. This bridge vertical load-carrying frequency when two trains on it is smaller than that only train on it. The maximum deviation percentage between the vertical load-carrying natural frequency and the vertical natural frequency is 1.17837%.This bridge vertical load-carrying frequency can be replaced by its natural frequency, and there isn’t obvious error. If the vertical load-carrying frequency should be calculated, it can be replaced by the average value.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 797-800
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.797
• Online since: May 2011
• Authors: Jian Ying Ren, Wen Ping Li, Mu Biao Su, Qing Yuan Zeng
• Keywords: Pre-Stressed Concrete Continuous Bridge, Railway Double-Track Bridge, Vehicle-Bridge System, Vertical Load-Carrying Natural Frequency

References

[1] Ministry of Railways of the People's Republic of China: Code for Rating Existing Railway Bridges(China railway publishing house, Beijing 2004) (in Chinese)

[2] Jianzhong Li and Mubiao Su: Journal of Sound and Vibration, Vol. 224(5)( 1999), p.897

[3] Jianying Ren, Mubiao Su, Wenping Li and Binbo Liang: Journal of the China Railway Society, Vol. 27(5)(2005), p.111 (in Chinese)

[4] Futian Wang: Vehicle dynamics (China railway publishing house, Beijing 1983) (in Chinese)

[5] Mubiao Su, Jianzhong Li and Zhiguang Liang: Journal of the China Railway Society,Vol. 23(2)(2001), p.76 (in Chinese)