TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Sleeper Looseness of Bi-Block Ballastless Track on Wheel-Track System Dynamic

Accession Number:

01519552

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The bi-block ballastless track originated from the Rheda 2000 system has been widely used in high-speed railways in China. After three years of field investigation, it is determined that track slab cracking is a major problem of bi-block ballastless system. Particularly, cracking around sleepers can develop rapidly resulting in loosened sleepers, which directly affect the integrity of track and the safety of vehicle. In this paper, based on extensive survey of sleeper looseness of bi-block ballastless track, the cause and the development of sleeper looseness are investigated. A finite element model (FEM) is established for vehicle, bi-block ballastless track, and subgrade dynamic coupling system. The influences of vehicle travelling speed, height of sleeper hanging and number of loose sleepers on the simulated dynamic characteristics for track structure and vehicle ride comfort and safety are analyzed. In addition, field testing is performed to monitor the dynamic characteristics of track structure before and after sleeper looseness is repaired. Comparing the FEM simulated results with field monitoring data, it is concluded that the FEM based model can be utilized to analyze the sleeper looseness of bi-block ballastless track with satisfactory results

Supplemental Notes:

This paper was sponsored by TRB committee AR050 Railroad Track Structure System Design. Alternate title: Impact of Sleeper Looseness of Bi-Block Ballastless Track on Wheel-Track System Dynamics

Monograph Accession #:

01503729

Report/Paper Numbers:

14-4403

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Yang, Rongshan
Ren, Juanjuan
Liu, Xueyi
Li, Qiang
Wang, Kelvin C P

Pagination:

22p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Geographic Terms:

China

Subject Areas:

Design; Maintenance and Preservation; Railroads; Vehicles and Equipment; I60: Maintenance

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-4403

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:31PM