Influence of sleeper spacing on mechanical properties of cast-in-place steel spring floating slab track bed

Yancai Xiao; Kun Fu; Zhuang Li; Zhiping Zeng; Jian Bai; Zhibin Huang; Xudong Huang; Yu Yuan

doi:10.1117/12.2638728

20 September 2022 Influence of sleeper spacing on mechanical properties of cast-in-place steel spring floating slab track bed

Yancai Xiao, Kun Fu, Zhuang Li, Zhiping Zeng, Jian Bai, Zhibin Huang, Xudong Huang, Yu Yuan

Author Affiliations +

Proceedings Volume 12261, International Conference on Mechanical Design and Simulation (MDS 2022); 122613L (2022) https://doi.org/10.1117/12.2638728
Event: Second International Conference on Mechanical Design and Simulation (MDS 2022), 2022, Wuhan, China

Abstract

In order to study the influence of sleeper spacing on the mechanical properties of steel spring floating slab track bed, taking a subway project as an example, the finite element static model of steel spring floating slab track established by finite element software is used to simulate the action of train load, and the stress and deformation characteristics of rail and floating slab concrete under three load combinations and 335 calculation conditions are analyzed. The research shows that: (1) When there is no lateral force, the stress and deformation of the rail under the designed sleeper spacing(DSS) are basically the same as that under the imaginary sleeper spacing(ISS); when the lateral force acts, the regular sleeper spacing can reduce the deformation of the track structure to a certain extent. (2) The lateral and vertical axle load have little influence on the displacement of steel spring floating slab. The relative variation difference under different sleeper spacing is less than 5%, but the relative variation amplitude of concrete stress of floating slab is about 20%. (3) Based on the analysis results of stress and deformation characteristics of rail and floating slab, the relative difference of rail deformation and stress is less than 5%, the stress increment amplitude of floating slab is less than 0.35Mpa, and the relative difference of displacement is within 12%.

Citation Download Citation

Yancai Xiao, Kun Fu, Zhuang Li, Zhiping Zeng, Jian Bai, Zhibin Huang, Xudong Huang, and Yu Yuan "Influence of sleeper spacing on mechanical properties of cast-in-place steel spring floating slab track bed", Proc. SPIE 12261, International Conference on Mechanical Design and Simulation (MDS 2022), 122613L (20 September 2022); https://doi.org/10.1117/12.2638728

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available