Study on Critical Speed of Freight Train Derailment on Bridges

Zhi Hui Zhou; Guo Liu; Zhi Dong Qian; Ying Wen; Qing Yuan Zeng

doi:10.4028/www.scientific.net/AMR.639-640.456

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 639-640Study on Critical Speed of Freight Train...

Study on Critical Speed of Freight Train Derailment on Bridges

Abstract:

The mechanism of train derailment was demonstrated to be the loss of lateral vibration stability of train-bridge (track) system. Based on the theory of energy increment analysis for system movement stability, the energy increment criterion for derailment evaluation and the method of analyzing critical speed of train derailment Vcr were presented. The critical speed of empty freight train on Laoluanhe bridge, Huanghe bridge and Youshui bridge were calculated as 65.2 km/h，64.8 km/h and 66.5 km/h respectively, which were close to actual derailment speed. It is manifested that the method of analyzing critical speed of train derailment is reasonable. According to the calculated results of the critical speed on bridges with different lateral rigidity, it is testified that the critical speed of train derailment rises with the bridge lateral rigidity strengthened. The measure to prevent derailment on bridge is to ensure enough bridge lateral rigidity to meet the running safety of train.

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Periodical:

Advanced Materials Research (Volumes 639-640)

Pages:

456-459

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.639-640.456

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Online since:

January 2013

Authors:

Zhi Hui Zhou, Guo Liu, Zhi Dong Qian, Ying Wen, Qing Yuan Zeng

Keywords:

Bridge Lateral Rigidity, Critical Speed, Derailment, Energy Increment Criterion, Freight Train

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References

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