Experimental Study on Mechanical Characteristics of CRTSIII Slab Ballastless Track under Train Load

DOI

10.2991/icache-15.2015.96How to use a DOI?

Keywords

CRTSIII slab ballastless track; self-compacting concrete thickness; fatigue experiment; mechanical characteristics

Abstract

This paper studied on the fatigue experiment of two CRTSIII slab ballastless tracks on subgrade under high-speed train load, one was the track structure with self-compacting concrete thickness of 70 mm (the 70 mm's), the other was 90 mm (the 90 mm's). The two tracks were made of 1:1 full-scale test models and were carried out 3million times fatigue load test respectively. The experimental results show that the self-compacting concrete thickness has little effect on the change of fastener stiffness and isolation layer stiffness, while greatly affects the acceleration of track panel and the base and the strain of the self-compacting concrete and the base concrete. With the same experiment times, the maximum of the acceleration of track panel and the base of the 70 mm's is 1.2-1.4 times that of the 90 mm's. With the same experiment times and the same position, the maximum of the strain of the self-compacting concrete and the base concrete of the 70 mm's is 1.2-1.5 times that of the 90 mm's.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhiping Zeng
AU  - Xianfeng He
AU  - Xiaobai Meng
AU  - Kunteng Zhu
PY  - 2015/11
DA  - 2015/11
TI  - Experimental Study on Mechanical Characteristics of CRTSIII Slab Ballastless Track under Train Load
BT  - Proceedings of the 2015 International Conference on Architectural, Civil and Hydraulics Engineering
PB  - Atlantis Press
SP  - 503
EP  - 507
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-15.2015.96
DO  - 10.2991/icache-15.2015.96
ID  - Zeng2015/11
ER  -