Study of the Effect of Cement Asphalt Mortar Disease on Mechanical Properties of CRTS II Slab Ballastless Track

Abstract:

This paper built the three dimension mechanics model of CRTSII slab ballastless track structure on subgrade with ANSYS software. Analysis the influence of deformation and stress characteristics caused by different temperature gradients and the coupling action of temperature gradients and train loads under different work conditions, including no-separated, separated, and multiple-slabs separated with the cement asphalt mortar layer. The results show that, temperature gradients on track slab is one of the main reasons which caused the gap appearing between the bottom of slab track and cement asphalt mortar elastic cushion. And the joint main cause the deterioration of vibration of track slab, accelerating the deterioration of the cement asphalt mortar layer.

• Periodical: Advanced Materials Research (Volume 906)
• Pages: 305-310
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.906.305
• Online since: April 2014
• Authors: Fu Shan Liu, Zhi Ping Zeng, Bin Wu, Zhi Chao Zhang, Kui Peng
• Keywords: Cement Asphalt Mortar, Coupling Action, CRTS II Slab Ballastless Track, Temperature Gradient, Train Load

References

[1] Zhi-qing JIANG, JIANG Cheng. Study on Damage Repair of CRTSⅡ Slab Ballastless Track Mortar Layer. China Railway Science, 2010, 03: 118-112. In Chinese.

[2] Li WANG, Ping WANG. Common Deterioration Phenomena and Effect Analysis of Mortar Bed on CRTⅡTrack Structure. Railway Standard Design, 2012, (11): 11-14. In Chinese.

[3] Cheng-xiao WANG. Study of CRTS Ⅲ Ballastless Track Mechanical Properties. Beijing: Beijing Jiaotong University, 2011. 06. In Chinese.

[4] Qing-yuan XU, Bin LI, Xiao-lin ZHOU. Dynamic coefficient of slab track system on subgrade under high-speed trains. Journal of Central South University, 2011, 42(9): 2831-2836. In Chinese.

[5] Xiao-lin SONG, Wan-ming ZHAI. Dynamic Stress Distribution of the Infrastructure of CRTSⅡ Slab Ballastless Track under High Speed Moving Load. China Railway Science, 2012, 33(4): 1-7. In Chinese.

[6] Xi-Cheng CHEN. Analysis on Dynamic Performance of Slab Track on Subgrade under Move Loading Action. Railway Engineering, 2007, 11: 94-98. In Chinese.

[7] Ji-jun WANG, Rui-lin YOU. Research on the Slab Temperature Warping of the Unit Slab Track System. China Railway Science, 2010, 31(3): 9-14. In Chinese.

[8] Sen-rong WANG, Li SUN, Qiu-yi LI. Temperature measurement and temperature stress analysis of ballastless track slab[J]. Journal of railway engineering society, 2009. In Chinese.

[9] Yu-ying LIU, Guo-tang ZHAO. Research of CRTS II ballastless track structures early joint. Chinese railway science, 2013(7). In Chinese.

[10] TUM of Central South University. Technical Research Report of Control the Joint between CRTS II ballastless track filling layer mortar and track plate[R], 2013. In Chinese.

[11] Xue-yi LIU, Ping-rui ZHAO, Rongshan YANG. Research on the design theory and method for ballastless track on passenger dedicated line. Chengdu: Southwest Jiaotong University, 2008. In Chinese.

[12] Zhong-hua LI. An Analysis on Structural Characteristics of CRTS Ⅰ and CRTS Ⅱ Slab Ballastless Track. Journal of east China Jiaotong university. 2010, 27(1). In Chinese.