Design and Analysis of New Elasticity Cushion of Ballastless Track Slab in High-Speed Railway

Author

Yu, Lei ; Zhang, Jiwen ; Tu, Yongming

Author_Institution

Coll. of Civil Eng., Southeast Univ., Nanjing, China

Volume

4

fYear

2010

fDate

4-6 June 2010

Firstpage

238

Lastpage

241

Abstract

According to the fact that the poor construction performance and durability problems are mainly caused by elasticity cushion in ballastless track slab, a new elasticity cushion with fiber reinforced foamed urethane (FFU) is designed that different from cement emulsified asphalt mortar (CAM) CRTS II elasticity cushion and CRTS I elastic cushion. Then the new elasticity cushion in track slab 3D models are built by using ANSYS software, the stress, deformation of new elasticity cushion are comparative analyzed with CRTS II elasticity cushion and CRTS I elastic cushion under combination of train and temperature loading. The results showed that the stress and deformation of new elasticity cushion are similar with CRTS II elasticity cushion, and satisfy track slab design requirement under combination of train and temperature loading. The problems of poor construction performance and poor durability of elasticity cushion could effectively improved by the new elasticity cushion.

Keywords

asphalt; cements (building materials); durability; elastic deformation; elasticity; finite element analysis; mortar; polymer foams; railway engineering; slabs; ANSYS; ballastless track slab; cement emulsified asphalt mortar; deformation; durability; elasticity cushion; fiber reinforced foamed urethane; highspeed railway; Asphalt; Cathode ray tubes; Computer aided manufacturing; Elasticity; Electronic ballasts; Mortar; Rail transportation; Slabs; Stress; Temperature; ballastless track slab; elasticity cushion; fiber reinforced foamed urethane (FFU); finite element;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Computing (ICIC), 2010 Third International Conference on

Conference_Location

Wuxi, Jiang Su

Print_ISBN

978-1-4244-7081-5

Electronic_ISBN

978-1-4244-7082-2

Type

conf

DOI

10.1109/ICIC.2010.331

Filename

5514063