Abstract
It is a common phenomenon for the settlement in the area of subgrade and culvert transition. Based on the theory of vehicle-track coupling dynamics, the vehicle-slab track-subgrade and culvert transition model was established. And the influence of different settlement types and values on vehicle-slab track dynamics behavior was studied. The results show that: (1) Settlement deformation of the subgrade and culvert transition area has great influence on the safety and stability of train and the vibration of the track structure. When the settlement occurs in different positions which include front of the transition section, transition area and culvert area, the maximum dynamic response arises in transition area and culvert area. (2) When the cosine settlement occurs in the transitional section of the subgrade and culvert, the bigger the amplitude is, the deeper the influence on the wheel rail dynamics index and track structure vibration is. (3) When the bending angle deformation occurs in the subgrade and culvert transition section, the greater the bending angle changing rates are, the bigger derailment coefficient and the wheel load reduction of the vehicle are, and the lower of driving safety and the stability of vehicles are.
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Acknowledgements
The work described in this paper was supported by the National Natural Science Foundation of China (Grant no. 51578053, U1234201 and U1234211). The Joint Funds of Beijing Natural Science Foundation Committee and Beijing Academy of Science and Technology (Grant no. L150003). The project of Zhejiang Province public Welfare Technology Application Research Plan (Grant no. 2015C31020).
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Cai, X., Kai, Y., Ren, C., Guo, L., Miao, Q. (2018). Dynamic Behavior of Vehicle-Slab Track in the Condition of Subgrade and Culvert Transition Settlement. In: Bian, X., Chen, Y., Ye, X. (eds) Environmental Vibrations and Transportation Geodynamics. ISEV 2016. Springer, Singapore. https://doi.org/10.1007/978-981-10-4508-0_37
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DOI: https://doi.org/10.1007/978-981-10-4508-0_37
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