Parameters Analysis of Train Running Performance on High-Speed Bridge during Earthquake

Abstract:

A model of coupled vehicle-bridge system excited by earthquake and irregular track is established for studying train running performance on high-speed bridge during earthquake, by the methods of bridge structure dynamics and vehicle dynamics. The results indicate that under Qian’an earthquake waves vehicle dynamical responses hardly vary with the increasing-height pier, but vehicle dynamical responses increase evidently while the height of pier is 18m, which the natural vibration frequency is approaching to dominant frequency of earthquake waves. Dynamic responses are linearly increasing with earthquake wave strength. Dynamic response of vehicles including lateral car body accelerations and every safety evaluation index all increase with train speed, so the influences of train speed must be taken into account in evaluating running safety of vehicles on bridge during earthquakes, but lateral displacement of bridge is varying irregularly. Dynamic responses and lateral displacement of bridge reduce under the higher dominant frequency of earthquake wave. Derailment coefficient, later wheel-rail force and lateral vehicle acceleration become small with increasing damping ratio. Vertical vehicle acceleration and reduction rate of wheel load are hardly varying with damping ratio.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 4457-4463
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.4457
• Online since: December 2010
• Authors: Yu Sen Lin, Li Hua Xin, Min Xiang
• Keywords: Dynamic Response, Earthquake, Running Safety, Vehicle-Bridge System

References

[1] Yanguiping, Xiahe, Chenyingjun. Earthquake Response Analysis of System of Train and Composite Bridge of Stiff Beam and Flexible Arch. Journal of Northern Jiaotong University (In Chinese), 1994(1): 9-16.

[2] HanYan, XiaHe, Weiwei Guo. Dynamic Analysis of Cable—stayed Bridge Subjected to Running Trains and Earthquakes．Journal of Engineering Mechanics (In Chinese), 2006(1): 93-98.

[3] Shitianhongming, Gongbenyueshi, translated by Yanguomin. Stabilization Analysis of Running Trains and Earthquakes. Japanese Railway Polytechnic graduate school (In Chinese), 1997(6).

[4] Lizhongxian, Huangjian, Zhangyuan, etal. Effect of Earthquake to Coupling Vibration System of vehicle on light railway and bridge. Journal of Earthquake Engineering and Engineering Vibration (In Chinese). 2005(6): 183-188.

[5] Zhangguozhong, Yanweiming, Lihongquan. Vertical Dynamic Research of magnetic suspension train and bridge system during earthquake. Journal of World Earthquake Engineering (In Chinese), 2006(3): 148-155.