High temperature deformation and damage mechanism of CRTSⅡBallastless track on high speed railway

Journals

Online: 5 July 2022; Volume 1, Issue 1, No.2 PDF DOWNLOAD

Title：
High temperature deformation and damage mechanism of CRTSⅡBallastless track on high speed railway
Author：
Hu Zhao^1,2, Li Sun^1,2, Xuyi Liu^1,2
Author Affiliation：
1. China Railway Siyuan Survey and Design Group CO.,LTD, P.R.China
2. Department of Civil Engineering, Southwest Jiaotong University, P.R.China

Abstract

To study the temperature deformation characteristic and damage mechanism under system temperature rise and temperature gradient, finite element method was used to establish the theoretical analysis model of the ballastless track which covered 12 slabs with length of nearly 80 meters. The view of jaw effect of track joint force was put forward to explain the way how joint concrete crush. The track deformation characteristics were calculated under homogeneous joint damage and inhomogeneous joint damage, as while as their combination. Through theoretical calculation, the mechanism of track local instability has been partly rigorously studied.

References

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