Lateral Resistance of Polyurethane-reinforced Ballast with the Application of New Bonding Schemes: Laboratory Tests and Discrete Element Simulations
To mitigate the ballast flight risk in the high-speed railway, this paper presents three new polyurethane bonding schemes which have negligible influence to tamping operations. With the application of these bonding schemes, a series of laboratory tests indicated that the polyurethane-reinforced ballast exhibited much larger lateral resistance than the ordinary ballast by 31% at least. Discrete element simulation results further demonstrated that the polyurethane improved the load-bearing capacity of the ballast at the particle scale through effectively restraining the particle movement. Therefore, the proposed bonding schemes ensure adequate lateral ballast resistance and are effective measures for improving the ballast performance.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
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Supplemental Notes:
- © 2019 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Jing, Guoqing
- Zhang, Xu
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0000-0001-7924-9527
- Jia, Wenli
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0000-0002-0878-6090
- Publication Date: 2019-10-10
Language
- English
Media Info
- Media Type: Web
- Features: Figures; Photos; References; Tables;
- Pagination: pp 627-636
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Serial:
- Construction and Building Materials
- Volume: 221
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0950-0618
- Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1
Subject/Index Terms
- TRT Terms: Ballast (Railroads); Bonding; Discrete element method; Laboratory tests; Polyurethane resins; Reinforcing materials; Simulation
- Uncontrolled Terms: Lateral resistance
- Subject Areas: Materials; Railroads;
Filing Info
- Accession Number: 01714165
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 21 2019 9:35AM