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Title:

Rub-plate Length Influence on Longitudinal Coupled Slab Track Forces and Displacements in Railroad Bridges Turnouts

Accession Number:

01340570

Record Type:

Component

Abstract:

Because of the successful construction and operation of the Beijing-Tianjin intercity railway line, the Longitudinal Coupled Prefabricated Slab Track (LCPBT) system has shown its outstanding advantages in both mechanical and structural aspects. With a design speed of 350 km/h, the LCPBT system was also used on the 595.62-m-long, double-track LeiDa Bridge on the Wuhan-Guangzhou Passenger Dedicated Line (PDL) in China, which has been put into operation at the end of 2009. In order to equably transfer longitudinal force from the coupled concrete base to the sub-base by friction, a reinforced concrete rub-plate was placed in transition zones from bridges to the sub-grade. A 100-m-long, 0.4-m-thick rub-plate was built at the Beijing-Tianjin intercity railway line, whereas a 50-m-long rub-plate was used at the Wuhan-Guangzhou PDL. Setting an overlong rub-plate is unfavorable for structural design, construction progress and engineering cost. This paper established an integral finite element model of jointless turnout (crossover)-track slab-bridge-pier taking the LCPBT system on LeiDa Bridge, and researched the proper setting length of the rub-plate in this structure. Calculation conclusions and suggestions about the proper rub-plate length were also included: the 100-m-long rub-plate used on the Beijing-Tianjin intercity railway line can be shortened; a length of 50 m to 75 m will be appropriate as the case may be; it should be no shorter than 25 m to 50 m even though in the most unfavorable engineering case. An integral finite element model of jointless turnout (crossover)-track slab-bridge-pier was established taking the LCPBT system on LeiDa Bridge.

Monograph Accession #:

01329018

Report/Paper Numbers:

11-3046

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Ren, JuanJuan
Wang, Ping
Xiang, Rui
Moreu, Fernando

Pagination:

12p

Publication Date:

2011

Conference:

Transportation Research Board 90th Annual Meeting

Location: Washington DC, United States
Date: 2011-1-23 to 2011-1-27
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; Photos; References (10) ; Tables (3)

Uncontrolled Terms:

Dedicated train service

Geographic Terms:

Beijing (China); Tianjin (China)

Subject Areas:

Bridges and other structures; Design; Railroads; I22: Design of Pavements, Railways and Guideways; I24: Design of Bridges and Retaining Walls

Source Data:

Transportation Research Board Annual Meeting 2011 Paper #11-3046

Files:

TRIS, TRB

Created Date:

Feb 17 2011 6:23PM