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Title:

A Novel Full-Scale Test Facility for Ballastless High-Speed Railroad with Simulated Train Moving Loads

Accession Number:

01475204

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This paper presents a novel full-scale test facility for ballastless high-speed railroad’s dynamic performance and accelerated long-term behavior under train’s moving loads. A portion of ballastless high-speed railroad, which is almost identical to some part of realistic high-speed railroad in China, has been built in a model test box (15m*5m*6m) (49.2 ft*16.4 ft*19.7 ft) in Zhejiang University. A sequential loading system composed of eight high-performance hydraulic actuators is developed to exert dynamic loading on slab track at fasteners’ positions to simulate train’s moving loads. A theoretical model of train-slab track-subgrade dynamic interaction is applied to determine loads acting on fasteners in the experiments. The load sharing ratio of adjacent fasteners due to train wheel axle load acting on rails is found following Gaussian function distribution from the experiment data, and is applied in the load controlling in the experiments. Test data from the experiments are compared with the field measurements from the WuGuang high-speed railroad with various train speeds to verify the reliability of the proposed model test methodology. The experiments demonstrate the capacity of the developed full-scale model test facility to simulate train’s moving load at high speeds which modern trains can reach. More tests will be conducted to investigate dynamic performance of high-speed railroad, both for ballasted track or ballastless slab track, and long term behavior of railroad under very large cycles of train’s repeated movements.

Supplemental Notes:

This paper was sponsored by TRB committee AR050 Railroad Track Structure System Design.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-2630

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Bian, Xuecheng
Jiang, Hongguang
Chen, Yunmin

Pagination:

15p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

China

Subject Areas:

Design; Railroads; Terminals and Facilities; I22: Design of Pavements, Railways and Guideways

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-2630

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:33PM