米轨轨枕不同部位横向阻力分担比的数值模拟

Abstract
Figure/Table
References
Related Citation (12)

Download: PDF (931 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Research purposes: In order to study the lateral resistance sharing of meter gauge concrete sleeper and steel sleeper, the discrete element method is used to establish the ballast bed models of meter gauge concrete sleeper and steel sleeper respectively. The correctness of the discrete element model is verified by the lateral resistance test of a single sleeper, and the lateral resistance sharing ratio of meter gauge concrete sleeper and steel sleeper is further studied. At the same time, the measurement circle is set up in different parts of the discrete element model to monitor the ballast porosity, and the change law of ballast compactness is explored in different parts during the lateral movement of the sleeper.
Research conclusions: (1) The end and bottom of the meter gauge concrete sleepers provide about 79% of the lateral resistance of the track bed, while the resistance of the side track bed of the sleepers with large contact surface with the ballast particles accounts for less, so the sleeper ballasts can fully participate in the action by means of compaction and partial cementation. (2) About 60% of the lateral resistance of the track bed is provided by the end of the meter gauge steel sleeper, and about 30% of the lateral resistance of the track bed is provided by the bottom of the sleeper. (3)The lateral resistance of the meter gauge concrete sleeper track bed mainly comes from the friction between the sleeper and the bottom ballast particles and the pressure of the ballast shoulder. The lateral resistance of the meter gauge steel sleeper track bed mainly comes from the extrusion friction of the ballast in the sleeper cavity and the pressure of the ballast at the ballast shoulder. (4)The research conclusion can provide reference for the design and maintenance of meter gauge CWR.

Key words： meter gauge railway discrete element method lateral resistance of ballast bed compactness of ballast

Received: 23 July 2021

PACS:

U211.1

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WEI Kai
	CAI Yuanhui
	XIE Meng
	YOU Rui
	WANG Ping

Cite this article:

WEI Kai,CAI Yuanhui,XIE Meng, et al. Numerical Simulation of Lateral Resistance Sharing Ratio of Different Parts of Meter Gauge Sleeper[J]. Journal of Railway Engineering Society, 2022, 39(11): 38-42.

URL:

https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I11/38

[1]	高亮,罗奇,徐旸,等.道床断面尺寸对道床横向阻力的影响[J]. 西南交通大学学报,2014(6):954-960.Gao Liang,Luo Qi,Xu Yang,etc. Effects of Ballast Bed SectionDimension on Its Lateral Resistance[J]. Journal of Southwest Jiaotong University,2014(6):954-960.
[2]	井国庆,贾文利,强伟乐,等.有砟道床梯形轨枕横向阻力试验与构成分析[J]. 西南交通大学学报,2019(1):9-13.Jing Guoqing,Jia Wenli,Qiang Weile,etc. Ladder Sleeper Lateral Resistance Test and Contribution Analysis of Ballasted Track[J]. Journal of Southwest Jiaotong University,2019(1):9-13.
[3]	韩义涛,尤睿,李粮余,等.米轨铁路钢枕有砟道床横向阻力试验与仿真[J]. 铁道工程学报,2021(2):58-62.Han Yitao,You Rui,Li Liangyu,etc. Experiment and Simulation of LateralResistance of Meter-gage Railway Ballast Bed for Steel Sleepe[J]. Journal of Railway Engineering Society,2021(2):58-62.
[4]	韦凯,尤睿,马宏辉,等.米轨混凝土枕道床横向阻力离散元数值模拟[J]. 铁道工程学报,2020(5):7-11.Wei Kai,You Rui,Ma Honghui,etc. Discrete Element Numerical Simulation of Lateral Resistance of Meter-gage Railway Ballast Bed for Concrete Sleepe[J]. Journal of Railway Engineering Society,2020(5):7-11.
[5]	庞玲,强伟乐,周强,等.新型钢枕道床横向阻力试验与分析[J]. 铁道工程学报,2020(2):40-45.Pang Ling,Qiang Weile,Zhou Qiang,etc. Test and Analysis of Lateral Resistance of Innovated Steel Sleeper[J]. Journal of Railway Engineering Society,2020(2):40-45.
[6]	Talebi,Roshan,Zakeri,etc. Experimental Investigation into the Effect of Steel Sleeper Vertical Stiffeners on Railway Track Lateral Resistance[J]. Proceedings of the Institution of Mechanical Engineers,Part F. Journal of Rail and Rapid Transit,2017(1):104-110.
[7]	L.M. Le Pen,W. Powrie. Contribution of Base,Crib and Shoulder Ballast to the Lateral Sliding Resistance of Railway Track: a Geotechnical Perspective[J]. Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail and Rapid Transit,2011(2):113-128.
[8]	井国庆,付豪,贾文利,等.高速铁路有砟轨道横向阻力宏细观分析[J]. 铁道工程学报,2018(9):21-25.Jing Guoqing,Fu Hao,Jia Wenli,etc. Macro-micro Analysis of Lateral Resistance for High Speed Railway Ballasted[J]. Journal of Railway Engineering Society,2018(9):21-25.