Abstract
With the development of the high-speed railway, the ballastless track is widely applied and the dynamic characteristics of subgrade are the bases of the design, construction, and maintenance of the ballastless track/subgrade system. In a sense, the distribution rule of dynamic response under the action of train loads and the influence of subgrade parameters lags far behind the construction of the high-speed railway in engineering because of their complication. Dynamic system which was composed of rail, track, and roadbed is so complex that it cannot be solved depending on available theory. In this paper, the numerical simulation method was introduced to describe the dynamic action of roadbed which beard high-speed rail loads. Therefore, a 3-d finite element model of the track/subgrade system was established with the aid of ANSYS for the dynamic response of ballastless track subgrade which bears vehicle dynamic loads and loads input behavior. At the same time, the choice method and basis of a unit-type, constitutive model of subgrade and material parameters were established. According to distributed mode and behaviors of vehicle dynamic load and load input characteristics, a 2-car and 8-wheelset vehicle model was introduced to get contact pressure time-history curves of fastening when two bogies pass between neighboring cars through Fourier transform. Furthermore, the rationality and applicability of model were verified depending on the data which came from the test in situ. Vertical dynamic stresses, dynamic displacement, and dynamic acceleration were calculated for CRTSII-type slab ballastless track and double-block ballastless track when train passes which its speed was 300 km/h and axle load was 170 kN. In addition, the relationship between all those response laws and rail/subgrade construction was analyzed. Interrelated analyses conclude that vertical dynamic stresses, dynamic displacement, and dynamic acceleration decay as roadbed deepens, and dynamic acceleration decays faster. In addition, the type of track which influenced dynamic response only focuses on the top of the roadbed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Liang B, Luo H, Sun C (2006) Simulated study on vibration load of high speed railway. J China Railw Soc 28(4):89–94 (in Chinese)
Nie ZH (2005) Study on vertical dynamic response of the track/subgrade in high-speed railway. Central South University, Changsha, (in Chinese)
Sun C, Hu J, Liang B (2010) Numerical simulation of dynamic response for quasi-high speed railway subgrade. 27(2): 173–176
Zhu BF (1998) Principle and application of finite element methods. China Water Power Press, Beijing (in Chinese)
Luo Z, Zhai W, Cai C (2005) Mechanical analysis of ballastless track-roadbed system. In: Railway passenger dedicated line construction technology exchange meeting proceedings, Wuhan, 96–99
Qing Q (2005) Study on dynamic characteristics of ballastless track-roadbed system with soft rock as embankment filling in high speed railway. Central South University, Changsha (in Chinese)
Luo Z (2008) Analysis of structure mechanics and wheel/rail dynamic interaction of ballastless track in high-speed railway. Southwest Jiaotong University, Chengdu (in Chinese)
Liu JB, Gu Y, Du YX (2006) Consistent viscous-spring artificial boundaries and viscous-spring boundary elements. Chin J Geotech Eng 28(9):1070–1075 (in Chinese)
Tong FM (2010) Dynamic response and long-term dynamic stability of closely spaced transition sections subgrade for high-speed railway. Central South University, Changsha (in Chinese)
Wang Q (1999) Civil engineering in high-speed railway. Southwest Jiaotong University Press, Chengdu (in Chinese)
Zhai WM (2002) Vehicle-track coupling dynamics. Science Press, Beijing (in Chinese)
Chen G (2001) Analysis of the random vibration responses characteristics of the vehicle-track coupling system. Southwest Jiaotong University, Chengdu (in Chinese)
Railway Construction (2005) 160, Provisional standard for acceptance of construction quality of subgrade engineering for passenger-special line. China Railway Publishing House, Beijing (in Chinese)
Li J, Li K (1995) Finite element analysis for dynamic response of roadbed of high-speed railway. J China Railw Soc 17(1):66–75 (in Chinese)
Dong L, Zhao C, Cai D et al (2008) Experimental validation of a numerical model for prediction of the dynamic response of ballastless subgrade of high-speed railways. China Civ Eng J 41(10):81–86 (in Chinese)
Xu J (2011) Research model test system of high speed railway subgrade and dynamics analysis. Central South University, Changsha (in Chinese)
Xu J, Zhang J, Huang Y (2010) The analysis of servo loading effect in high-speed railway. In: ICRE 2010 international conference on railway engineering, vol 8, 350–355
Wang QY (2013) Study on dynamic characteristics and parameters of ballastless track-roadbed system of high speed railway. Central South University, Changsha (in Chinese)
Zhou Z (2010) Roadbed integrating field investigation and numerical simulation of Wu-Guang passenger railways. Central South University, Changsha (in Chinese)
Acknowledgements
The research described in this paper was financially supported by National Natural Science Foundation of China (Grants Nos.51508097 and Nos.51378514).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Wang, X., Cheng, H., Zhang, B., Zhang, J., Wang, Q. (2020). Three-Dimensional Numerical Simulation of Vehicle Dynamic Load and Dynamic Response for Ballastless Track Subgrade. In: Tutumluer, E., Chen, X., Xiao, Y. (eds) Advances in Environmental Vibration and Transportation Geodynamics. Lecture Notes in Civil Engineering, vol 66. Springer, Singapore. https://doi.org/10.1007/978-981-15-2349-6_25
Download citation
DOI: https://doi.org/10.1007/978-981-15-2349-6_25
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-15-2348-9
Online ISBN: 978-981-15-2349-6
eBook Packages: EngineeringEngineering (R0)