Next Article in Journal
Eggplant Fruit (Solanum melongena L.) and Bio-Residues as a Source of Nutrients, Bioactive Compounds, and Food Colorants, Using Innovative Food Technologies
Next Article in Special Issue
Numerical Study on Track–Bridge Interaction of Integral Railway Rigid-Frame Bridge
Previous Article in Journal
Minimizing Resource Waste in Heterogeneous Resource Allocation for Data Stream Processing on Clouds
Previous Article in Special Issue
A Network-Based Method to Analyze EMI Events of On-Board Signaling System in Railway
Open AccessArticle

Research on the Vibration Characteristics of a Track’s Structure Considering the Viscoelastic Properties of Recycled Composite Sleepers

by 1,2, 3 and 1,2,*
1
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
2
Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
3
School of Railway Engineering, Shijiazhuang Institute of Railway Technology, Shijiazhuang 050041, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(1), 150; https://doi.org/10.3390/app11010150
Received: 4 December 2020 / Revised: 21 December 2020 / Accepted: 22 December 2020 / Published: 25 December 2020
(This article belongs to the Special Issue Interactions between Railway Subsystems)
In order to investigate the vibration characteristics of a composite sleeper-ballasted track and provide a basis for further popularization, a vehicle–track dynamic coupling model is established and the viscoelastic properties of the composite sleeper are considered. The power flow method is employed to reveal the power flow distribution characteristics of the composite sleeper. The results show that the viscoelastic properties of the composite sleeper have little influence on the rail power and have a greater influence on the power flow of the sleeper and ballast bed in some frequency ranges. The viscoelastic properties of the composite sleeper can effectively improve the calculation accuracy of the track structure’s power flow. Compared with the type-III pre-stressed concrete sleepers widely used in China, composite sleepers consume more energy in the vibration process due to their own physical characteristics, which reduces the power flow transmitted downward and relieves vibration on the ballast bed, especially in the ranges of 80–125 Hz and 250–400 Hz. The temperature change mainly affects the power flow of the composite sleeper in the frequency range above 50 Hz. As the temperature increases, the modulus of the composite sleeper decreases and the vibration reduction effect of the ballast bed is improved. View Full-Text
Keywords: composite sleeper; power flow; ballasted track; vibration energy; viscoelastic properties composite sleeper; power flow; ballasted track; vibration energy; viscoelastic properties
Show Figures

Figure 1

MDPI and ACS Style

Zhao, Z.; Gao, Y.; Li, C. Research on the Vibration Characteristics of a Track’s Structure Considering the Viscoelastic Properties of Recycled Composite Sleepers. Appl. Sci. 2021, 11, 150. https://doi.org/10.3390/app11010150

AMA Style

Zhao Z, Gao Y, Li C. Research on the Vibration Characteristics of a Track’s Structure Considering the Viscoelastic Properties of Recycled Composite Sleepers. Applied Sciences. 2021; 11(1):150. https://doi.org/10.3390/app11010150

Chicago/Turabian Style

Zhao, Zhenhang; Gao, Ying; Li, Chenghui. 2021. "Research on the Vibration Characteristics of a Track’s Structure Considering the Viscoelastic Properties of Recycled Composite Sleepers" Appl. Sci. 11, no. 1: 150. https://doi.org/10.3390/app11010150

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop