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Technologies 2017, 5(2), 11; doi:10.3390/technologies5020011

Railway Continuous Prestressed Concrete Bridge Design in Ballastless Track Turnout Zones

1
Southern Region Engineering Office, Railway Reconstruction Bureau, Ministry of Transportation and Communications, Kaohsiung 81354, Taiwan
2
Central Region Engineering Office, Railway Reconstruction Bureau, Ministry of Transportation and Communications, Taichung 40143, Taiwan
3
Department of Civil Engineering, Chung Hua University, Hsinchu 30012, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editors: Frédéric Lebon, Raffaella Rizzoni and Manoj Gupta
Received: 31 December 2016 / Revised: 17 March 2017 / Accepted: 23 March 2017 / Published: 30 March 2017
(This article belongs to the Special Issue Construction Materials Technologies)
View Full-Text   |   Download PDF [6227 KB, uploaded 31 March 2017]   |  

Abstract

Laying ballastless track on railway bridges has the advantages of reducing the train noise problem, improving passenger comfort, and reducing track maintenance costs. Therefore, railway bridges with ballastless track have gradually turned into a major trend in railway systems all over the world. In Taiwan, railway bridges with ballastless track have been in use for many years, with ballastless track turnouts also starting to be constructed in recent years. Where railway bridges with ballastless track turnouts are located in urban areas, special consideration must be given to the road crossings and the use of continuous bridges in the turnout zones. Accordingly, there arise a number of difficulties related to the bridge configurations or the continuous length of bridges being excessively long. Often, such situations necessitate the use of extremely large-sized bridge piers in the bridge design, or create the risk of serious damage to the pier structure should insufficient attention be given to any of the factors. This article will take a continuous prestressed concrete bridge as an example. The prestressed concrete bridge must be absolutely continuous, be able to include ballastless track turnout zones, and meet the needs of crossing roads. For this example, the length of the continuous prestressed concrete bridge is over 300 m. This article will also discuss the configuration of a continuous prestressed concrete bridge of railway, and—through the analysis of track–bridge interaction and temperature detection—provides suggestions on the optimal configuration model of the continuous prestressed concrete bridges, which should allow improper configuration and possible structural damage to be avoided. View Full-Text
Keywords: railway bridge; continuous prestressed concrete bridge; ballastless track; turnout zone; track buckling railway bridge; continuous prestressed concrete bridge; ballastless track; turnout zone; track buckling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hsu, W.-K.; Shih, N.-H.; Lee, Y.-L. Railway Continuous Prestressed Concrete Bridge Design in Ballastless Track Turnout Zones. Technologies 2017, 5, 11.

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