Influenced of train speed on dynamic characteristics of ballastless track subgrade

Qiu Yan-jun; Zhang Xiao-jing; Wei Yong-xing

Article Contents

Article Navigation > Journal of Traffic and Transportation Engineering > 2007 > 7(2): 1-5

Qiu Yan-jun, Zhang Xiao-jing, Wei Yong-xing. Influenced of train speed on dynamic characteristics of ballastless track subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(2): 1-5.

Citation:

Qiu Yan-jun, Zhang Xiao-jing, Wei Yong-xing. Influenced of train speed on dynamic characteristics of ballastless track subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(2): 1-5.

Qiu Yan-jun, Zhang Xiao-jing, Wei Yong-xing. Influenced of train speed on dynamic characteristics of ballastless track subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(2): 1-5.

Citation:

PDF( 468 KB)

Influenced of train speed on dynamic characteristics of ballastless track subgrade

1.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2.
The Second Survey and Design Institute of China Railways, Chengdu 610031, Sichuan, China

More Information

Author Bio:
Qiu Yan-jun(1966-), male, PhD, professor, +86-28-87600340, publicqiu@vip.63.com
Received Date: 2006-12-12
Publish Date: 2007-04-25

Abstract

Abstract

In order to analyze the influence of train speed on the dynamic characteristics of ballastless track subgrade, a 3-D layer finite element model of the subgrade was establisbed by using layer system theory and finite element method, the different speed influences of train load on the vertical acceleration, vertical displacement, dynamic stress and its transverse distribution characteristics of the subgrade surface layer were considered, and the mechanical behaviors of the subgrade under train load were studied.It is observed that the vertical acceleration is obviously affected by train load speed, and the acceleration increases with train load speed raising; the dynamic displacement is little influenced by train load speed, and its change value is less than 0.05 mm when the speed increased by 20 km·h^-1; the dynamic stress presents a fluctuate trend with train load speed increasing.The result is similar to actual measure result, and approves the correctness of the model.
- high-speed railway,
- ballastless track,
- subgrade,
- finite element method,
- acceleration,
- dynamic stress,
- dynamic displacement

FullText(HTML)

References(16)

References

[1]	Krylov V V. Calculation of low frequency ground vibration from rail way trains[J]. Applied Acoustics, 1994, 42(3): 199-213. doi: 10.1016/0003-682X(94)90109-0
[2]	Krylov V V. Generation of ground vibration by superfast trains[J]. Applied Acoustics, 1995, 44(2): 149-164. doi: 10.1016/0003-682X(95)91370-I
[3]	Matsuura A. I mpulsive response of an elastic layered mediumin the anti-plane wave field based on a thin-layered elementand discrete wave number method[J]. Structural Engineering/Earthquake Engineering, 1993, 9(22): 119-128.
[4]	Matsuura A. Si mulation for analyzing direct derailment limit of running vehicle on oscillating tracks[J]. Structural Engineering/Earthquake Engineering, 1998, 15(1): 63-72.
[5]	Kaynia A M, Madshus C, Zackrisson P. Ground vibration from high speed trains: prediction and countermeasure[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 126(6): 531-537. doi: 10.1061/(ASCE)1090-0241(2000)126:6(531)
[6]	Sheng Xiao-zhen, Jones C J C, Petyt M. Ground vibration generated by a harmonic load acting on a rail way track[J]. Journal of Sound and Vibration, 1999, 225(1): 3-28. doi: 10.1006/jsvi.1999.2232
[7]	Sheng Xiao-zhen, Jones C J C, Petyt M. Ground vibration generated by a load moving along a rail way track[J]. Journalof Sound and Vibration, 1999, 228(1): 129-156. doi: 10.1006/jsvi.1999.2406
[8]	Sheng Xiao-zhen, Jones C J C, Petyt M. Si mulation ofground vibration from a moving harmonic load on a rail waytrack[J]. Journal of Sound and Vibration, 2000, 231(3): 739-751. doi: 10.1006/jsvi.1999.2559
[9]	Wang Chang-jing, Chen Yun-min. Analysis of stresses intrain-induced ground[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(7): 1 178-1 187. (in Chinese) doi: 10.3321/j.issn:1000-6915.2005.07.016
[10]	Li Jun-shi, Li Ke-chuan. Finite element analysis for dynamic response of roadbed of high-speed rail way[J]. Journal of theChina Rail way Society, 1995, 17(1): 66-75. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB501.009.htm
[11]	Jenkins H H, Stephenson J E, Clayton G A, et al. Theeffect of track and vehicle parameters on wheel/rail vertical dynamic forces[J]. Rail way Engineering Journal, 1974, 3(1): 2-16.
[12]	Cai Cheng-biao, Zhai Wan-ming, Wang Kai-yun. Calculation and assessment analysis of the dynamic performance for slabtrack on Sui-Yu rail way[J]. China Rail way Science, 2006, 28(4): 18-21. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK200604004.htm
[13]	Cai Cheng-biao, Zhai Wan-ming, Zhao Tie-jun, et al. Research on dynamic interaction of train and track on roadbed-bridge transition section[J]. Journal of Traffic and Transportation Engineering, 2001, 1(1): 17-19. (in Chinese) http://transport.chd.edu.cn/article/id/200101004
[14]	Wang Kai-yun, Liu Jian-xin, Zhai Wan-ming, et al. Running safety and comfortability si mulation of railway[J]. Journal of Traffic and Transportation Engineering, 2006, 6(3): 9-12. (in Chinese) http://transport.chd.edu.cn/article/id/200603003
[15]	He Zhen-xing, Zhai Wan-ming. Model of ground vibration generated by slab track[J]. Journal of Traffic and Transportation Engineering, 2006, 6(3): 13-17. (in Chinese) http://transport.chd.edu.cn/article/id/200603004
[16]	王其昌. 高速铁路土木工程[M]. 成都: 西南交通大学出版社, 1999.