Experimental Study on Dynamic Behaviors of Concrete Bridge in China Existing Railway Speed Increase to 200~250km/h

Peng Hui Liu; Yi Qian Yang; Jing Chuan Yao; Wei Wang; Zhen Sheng Dong

doi:10.4028/www.scientific.net/AMM.193-194.1123

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 193-194Experimental Study on Dynamic Behaviors of...

Experimental Study on Dynamic Behaviors of Concrete Bridge in China Existing Railway Speed Increase to 200~250km/h

Abstract:

On April fifteenth, 2007, the 4 vertical and 2 horizontal railway lines were increased the sixth time by the Chinese Ministry of Railways. The electrical multiple unit (EMU) was running at speed of 200km/h in these sections. In some sections, the EMU maximum speed has reached 250km/h. Dynamic behaviors of bridges and piers under the loads of the train were analyzed with different spans and types in existing speed-raising trunk lines. The critical parameters, such as lateral and vertical natural frequency, dynamic factor, lateral amplitude, lateral natural frequency and lateral amplitude of pier and so on, which play important roles in dynamic behaviors of bridge, are analyzed by experimental data. The lateral rigidity and dynamic behaviors of bridge including beams and piers are the most obvious problems in existing speed-raising lines. Based on years of research, especially lots of dynamic behavior tests of concrete bridge in recent year, the dynamic behaviors of bridges are analyzed comprehensively considering the vibration of bridge and train characteristics. Many results are got and used in the relevant codes.

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Periodical:

Applied Mechanics and Materials (Volumes 193-194)

Pages:

1123-1128

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.193-194.1123

Citation:

Cite this paper

Online since:

August 2012

Authors:

Peng Hui Liu, Yi Qian Yang, Jing Chuan Yao, Wei Wang, Zhen Sheng Dong

Keywords:

Bridge, Dynamic Behavior, Speed Increasing

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References

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