吹砟车维修机理离散元仿真与应用

Abstract
Figure/Table
References (0)
Related Citation (0)

Download: PDF (765 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Research purposes: The maintenance by the ballast blowing car needs to supply the small hard ballast under sleeper bottom to avoid tamping and breaking the ballast and eliminate the ballast memory effect． From the microscopic mechanics，there is a little research on the maintenance mode of blowing ballast and on its applicable effect． In order to research the working principle and the maintenance effect of ballast blowing car from the microscopic mechanics，the DEM was used to produce the ballast － sleeper 3D box model to simulate the ballast blowing． Ballast particles were made of real size irregular clumps to simulate the ballast interactions more precisely，and the research was done on the mechanic effect of the roadbed under monotonic loading on the sleeper before and after the ballast blowing．

Research conclusions: The micro － mechanics simulation results showed that the contact force between sleeper and ballast could be reduced by blowing ballast and the ballast blowing had a little influence on the sleeper － ballast deformation． So the mechanics principle of the ballast blowing car operation was revealed quantitatively from the numerical value principle． Compared with tamping ballast，the ballast blowing is high － efficient，rapid，low － cost and environment protected maintenance way．

Key words： irregular clump tamping discrete element method ballast blowing

Received: 22 September 2011

PACS:

U216． 6

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	JING Guo － qing
	GAO Liang
	SHAO Lei

Cite this article:

JING Guo － qing,GAO Liang,SHAO Lei. Simulation and Application of Maintenance Mechanism of Ballast Blowing Car with DEM[J]. 铁道工程学报, 2011, 28(11): 58-62.

URL:

http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2011/V28/I11/58

［1］ F． FASTENRATH． Railroad Track Theory and Practice［M］． Frederick Publishing，New York，2003: 175 －178．

［2］ E． T． SELIG． Track Geotechnology and Substructure Management ［M］． ISBN 0 － 7277 － 2013 － 9，London，1994．

［3］ C． ESVELD． Modern Railway Track ［M］． MRT Productions，Germany，1989: 185 － 192．

［4］ MCMICHAL P． L． The Economics of Stoneblowing for Maintenance of Way［C］/ /International Heavy Haul Conference Vancouver． Canada，1991．

［5］ Itasca， Itasca Consulting Group． PFC3D ［CP］．Minneapolis，Minnesota，2006．

［6］郑立宁，谢强．基于颗粒流的膨胀土路基破坏特征分析［J］．铁道工程学报， 2011( 3) : 32 － 36．

Zheng Lining，Xie Qiang． Analysis of Failure Properties of Expansive Soil Subgrade with Particle Flow Simulation ［J］． Journal of Railway Engineering Society， 2011( 3) : 32 － 36．

［7］ KEY，A． J． Behaviour of Wwo Layer Railway Track Ballast under Cyclic and Monotonic Loading ［D］．Sheffield，U． K． University of Sheffield，1998．

［8］ McDowell，G． R． The Importance of Modelling Ballast Particle Shape in the Discrete Element Method ［J］．Granular Matter 12，2005．

［9］ ANDERSON，W． F．，KEY，A． J． Model Testing of Two － layer Railway Track Ballast ［J］． Journal of Geotechnical and Geo － environmental Engineering，2000( 4) : 317 － 323．

［10］ TB/T 2140—2008，铁路碎石道砟［S］．

TB/T 2140—2008，Railway Ballast［S］．

［11］ FAIR P． The Behaviour of Two Layered Granular Materials in a Railway Environments［D］． Sheffield，U． K． University of Sheffield，2003．

［12］ MCMICHAL P． L． The Stoneblower － delivering the Promise［R］． TRB Annual Meeting，2003．

［13］ D． HILL － Smith D． Improved Track Geometry Durability Using the Stoneblower［C］/ /International Heavy Haul Conference Brisbane Australia，2001．

［14］ E． TUTUMLUER． Aggregate Shape Effects on Ballast Tamping and Railroad Track Lateral Stability ［A］．AREMA，2006， 17 － 20．