CLC number: U270
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2015-11-10
Cited: 8
Clicked: 6743
Jian Han, Guo-tang Zhao, Xin-biao Xiao, Ze-feng Wen, Qing-hua Guan, Xue-song Jin. Effect of softening of cement asphalt mortar on vehicle operation safety and track dynamics[J]. Journal of Zhejiang University Science A, 2015, 16(12): 976-986.
@article{title="Effect of softening of cement asphalt mortar on vehicle operation safety and track dynamics",
author="Jian Han, Guo-tang Zhao, Xin-biao Xiao, Ze-feng Wen, Qing-hua Guan, Xue-song Jin",
journal="Journal of Zhejiang University Science A",
volume="16",
number="12",
pages="976-986",
year="2015",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500080"
}
%0 Journal Article
%T Effect of softening of cement asphalt mortar on vehicle operation safety and track dynamics
%A Jian Han
%A Guo-tang Zhao
%A Xin-biao Xiao
%A Ze-feng Wen
%A Qing-hua Guan
%A Xue-song Jin
%J Journal of Zhejiang University SCIENCE A
%V 16
%N 12
%P 976-986
%@ 1673-565X
%D 2015
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500080
TY - JOUR
T1 - Effect of softening of cement asphalt mortar on vehicle operation safety and track dynamics
A1 - Jian Han
A1 - Guo-tang Zhao
A1 - Xin-biao Xiao
A1 - Ze-feng Wen
A1 - Qing-hua Guan
A1 - Xue-song Jin
J0 - Journal of Zhejiang University Science A
VL - 16
IS - 12
SP - 976
EP - 986
%@ 1673-565X
Y1 - 2015
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500080
Abstract: cement asphalt mortar (CAM) softening is a common phenomenon that results from ageing and rain soaking when a high-speed railway is in service. CAM softening seriously affects vehicle operation safety and track dynamics. In this paper, a 3D coupling dynamic model of a vehicle and a China railway track system I (CRTS-I) slab track is developed. By using the proposed model, the wheel-rail contact forces, derailment coefficient, wheelset loading reduction ratio, and the track displacements are calculated to study the influences of CAM softening on the dynamic characteristics of a vehicle-track system. A track-subgrade finite difference model is developed to study the effect of CAM softening on track damage. The results show that track interface shear failure develops when the CAM softening coefficients reach 10–100. The CAM softening coefficient should not be less than 1000, otherwise a high-speed running vehicle may risk derailment.
Cement asphalt mortar (CAM) is vastly used in the structure of high-speed railroad system, serving as a cushion layer between the slab and concrete base. In practice, deterioration and even failure of CAM layer often occur seriously after some years of service. As an organic-inorganic composite material, many factors, including rain soaking, fatigue are involved in the deterioration process of CAM. This paper is focusing on the effect of CAM softening on the vehicle operation and track damage by using the developed coupling dynamic model. The topic of this paper is highly relevant to the high-speed railway practice and the findings are very highly valuable for understanding the risk of CAM deterioration in the whole high-speed railway system.
[1]Chen, G., Zhai, W.M., 2004. A new wheel/rail spatially dynamic coupling model and its verification. Vehicle System Dynamics, 41(4):301-322.
[2]Chen, R.P., Chen, J.M., Wang, H.L., 2014. Recent research on the track-subgrade of high-speed railways. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 15(12):1034-1038.
[3]Han, J., Zhao, G.T., Xiao, X.B., et al., 2015. Contact behaviour between slab track and its subgrade under high-speed train loading and water-soil interaction. Electronic Journal of Geotechnical Engineering, 20(2):709-722.
[4]Jin, X.S., 2014. Key problems faced in high-speed train operation. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 15(12):936-945.
[5]Jin, X.S., Wen, Z.F., 2008. Effect of discrete track support by sleepers on rail corrugation at a curved track. Journal of Sound and Vibration, 315(1-2):279-300.
[6]Lin, H.S., 2009. Research on the Static and Dynamic Property of Ballastless Track based on Fracture and Damage Mechanics. PhD Thesis, Southwest Jiaotong University, Chengdu, China (in Chinese).
[7]Ling, L., Xiao, X.B., Xiong, J.Y., et al., 2014. A 3D model for coupling dynamics analysis of high-speed train/track system. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 15(12):964-983.
[8]Liu, J.B, Gu, Y., Du, Y.X., 2006. Consistent viscous-spring artificial boundaries and viscous-spring boundary elements. Chinese Journal of Geotechnical Engineering, 28(9):1070-1075 (in Chinese).
[9]Liu, Y., 2013. Study on Characteristics and Influences of CRTS II Slab Track Early Temperature Field. PhD Thesis, Southwest Jiaotong University, Chengdu, China (in Chinese).
[10]MOHURD (Ministry of Housing and Urban-Rural Development of the People’s Republic of China), 2010. Code for Design of Concrete Structures, GB 50010-2010. China Architecture and Building Press, Beijing, China (in Chinese).
[11]MRPRC (Ministry of Railways of the People’s Republic of China), 2013. Technical Regulations for Dynamic Acceptance for High-speed Railways Construction, TB 10716-2013. Railway Publishing House, Beijing, China (in Chinese).
[12]Shen, Z.Y., Hedrick, J.K., Elkins, J.A., 1983. A comparison of alternative creep-force models for rail vehicle dynamic analysis. Vehicle System Dynamics, 12(1-3):79-83.
[13]Wang, P., Xu, H., Chen, R., 2014. Effect of cement asphalt mortar debonding on dynamic properties of CRTS II slab ballastless track. Advances in Materials Science and Engineering, 2014:193128.
[14]Xiang, J., He, D., Zeng, Q.Y., 2009. Effect of cement asphalt mortar disease on dynamic performance of slab track. Journal of Central South University, 40(3):791-796 (in Chinese).
[15]Xiao, X.B., Jin, X.S., Wen, Z.F., 2007. Effect of disabled fastening systems and ballast on vehicle derailment. Journal of Vibration and Acoustics, 129(2):217-229.
[16]Xiao, X.B., Jin, X.S., Deng, Y.Q., et al., 2008. Effect of curved track support failure on vehicle derailment. Vehicle System Dynamics, 46(11):1029-1059.
[17]Xiao, X.B., Jin, X.S., Wen, Z.F., et al., 2011. Effect of tangent track buckle on vehicle derailment. Multibody System Dynamics, 25(1):1-41.
[18]Xiao, X.B., Ling, L., Xiong, J.Y., et al., 2014. Study on the safety of operating high-speed railway vehicles subjected to crosswinds. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 15(9):694-710.
[19]Zhai, W.M., 1996. Two simple fast integration methods for large-scale dynamic problems in engineering. International Journal for Numerical Methods in Engineering, 39(24):4199-4214.
[20]Zhang, W.H., 2011. Overall Technique of EMU and Bogies. Chinese Railway Press, Beijing, China (in Chinese).
[21]Zhong, S.Q., Xiong, J.Y., Xiao, X.B., et al., 2014. Effect of the first two wheelset bending modes on wheel-rail contact behavior. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 15(12):984-1001.
[22]Zhou, L., Shen, Z.Y., 2013. Dynamic analysis of a high-speed train operating on a curved track with failed fasteners. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 14(6):447-458.
[23]Zhu, S.Y., Cai, C.B., 2014. Interface damage and its effect on vibrations of slab track under temperature and vehicle dynamic loads. International Journal of Non-Linear Mechanics, 58:222-232.
[24]Zhu, S.Y., Fu, Q., Cai, C.B., et al., 2014. Damage evolution and dynamic response of cement asphalt mortar layer of slab track under vehicle dynamic load. Science China Technological Sciences, 57(10):1883-1894.
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