Analysis of Periodic Track Irregularities on the Bridges of Chengdu －Dujiangyan Intercity Railway

YANG Fei; SONG Guo － hua; LI Guo － qing

PDF(603 KB)

Journal of Railway Engineering Society ›› 2011, Vol. 28 ›› Issue (5) : 51-55.

Analysis of Periodic Track Irregularities on the Bridges of Chengdu －Dujiangyan Intercity Railway

YANG Fei，SONG Guo － hua，LI Guo － qing

Author information +

History +

Abstract

Research purposes: Since the Chengdu － Dujiangyan Intercity Railway was open to traffic，the periodic track irregularities on the bridge have been found by many inspections of the track dynamic profile． In order to dynamically know the impact of the periodic track irregularities on the safety and comfortableness of EMU，this paper analyzes the cause for the irregularities and development law of the irregularities with the statistical methods and dynamics simulation technology．

Research conclusions: The analysis results show that the periodic track irregularities on the bridge may be mainly caused by the concrete ＇s shrinkage and creep or the low stiffness of bridges． In addition，the irregularity of the 32 m －wavelength on the bridges is exactly in the ranges of sensitive wavelength of the trains at the speeds of 160 km / h and 200 km / h． Under the same amplitudes，the maximum vertical acceleration response is got at the speed of 200 km / h and the maximum unloading rate response is acqured at the speed of 160 km / h，and when the amplitude reaches at 7 mm，the vertical acceleration is over 0． 15 g，which exceeds comfortableness index Ⅱ． So it is necessary to treat the track irregularity on the bridge．

Key words

bridge / track irregularity / creep / inspection / simulation

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

YANG Fei, SONG Guo － hua, LI Guo － qing. Analysis of Periodic Track Irregularities on the Bridges of Chengdu －Dujiangyan Intercity Railway[J]. Journal of Railway Engineering Society, 2011, 28(5): 51-55

References

［1］铁道部科学研究院．成都至都江堰铁路动态检测报告［R］．北京: 铁道部科学研究院，2010．

Academy of Railway Sciences． Dynamic Test Report of Chengdu － Dujiangyan Railway ［R］． Beijing: China Academy of Railway Sciences，2010．

［2］铁建设［2010］214 号，高速铁路工程动态验收指导意见［S］．

Railway Construction ［2010 ］ No． 214， Dynamic Acceptance Guidance of High － speed Railway Project ［S］．

［3］ TB 10621—2009，高速铁路设计规范( 试行) ［S］．

TB 10621—2009，Design Code for High － speed Railway ( Trial) ［S］．

［4］练松良，黄俊飞．客货共运线路轨道不平顺不利波长的分析研究［J］．铁道学报，2004( 2) : 111 －115．

Lian Songliang，Huang Junfei． Study of the Detrimental Wavelengths of Track Irregularities for Railway with Passengers and Freight Track［J］． Journal of the China Railway Society，2004( 2) : 111 － 115．

［5］房建，雷晓燕，等．提速线路轨道不平顺不利波长的研究［J］．铁道工程学报，2010( 11) : 28 －31．

Fang Jian， Lei Xiaoyan，etc． Research on Track Irregularity and Unfavorable Wavelength of Speed － increased Railway［J］． Journal of Railway Engineering Society，2010，146( 11) : 28 － 31．

［6］铁运［2006］146 号，铁路线路维修规则［S］．

Railway Transport ［2006］ No． 146，Railway Track Maintenance Rules［S］．

［7］黎国清．秦沈客运专线常用跨度桥梁的动力分析［J］．铁道学报，2002( 1) : 104 －108

Li Guoqing，Dynamic Analysis of General Bridges for Qin － Shen Passenger Railway［J］． Journal of the China Railway Society，2002( 1) : 104 － 108．

［8］刘家锋，刘春彦．秦沈客运专线桥梁综述及高速铁路桥梁建设的思考［J］．铁道标准设计，2004( 7) : 134 －137．

Liu Jiafeng，Liu Chunyan． A Summary of Bridges on Qin － Shen Passenger Dedicated Railway and Pondering over Bridge Construction for High － speed Railway［J］． Railway Standard Design，2004( 7) :134-137.