RESEARCH OF RESISTANCE OF SPIKES AND SCREWS WHILE PULLING FROM WOODEN SLEEPER RESTORED BY POLYMER
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 175, Issue 9
Abstract
On the railways, the main part of wooden sleepers replaced with reinforced concrete. They have longer service lives, provide a constant track width, are less exposed to atmospheric influences and require lower maintenance costs. But under exploitation in underground tunnels, where the ballast under the rail-sleepers grid is a monolithic concrete foundation, the use of reinforced sleepers is complicated by increased rigidity of the base. Therefore, for the subway the most effective is the construction of the track on wooden sleepers. The main distinctive feature of the operation of wooden sleepers in the subway is that they are drowned in the road concrete and, in this connection, replacing them with new ones is a rather complicated and expensive operation, which requires considerable expenses for manual labor and costs. Therefore, there is a need to restore their operational properties without removing from track concrete, which can be done using the use of polymer materials. To study the work of intermediate fasteners (spikes and screws) in experienced wooden sleepers, restored with polymeric materials, they were tested for pulling. The obtained results confirm the expediency of using acrylic self-hardening acoustical AST-T plastic for restoration of operational properties of wooden sleepers that are in use in the subway tunnel. The purpose is to investigate the bearing capacity of intermediate fasteners, namely, spikes and screws, when pulling out of the wooden sleepers of the underground, which is restored with polymer materials. The objectives of the research are to determine the amount of effort that must be applied to the spikes and screw to pull them out of wooden sleepers, restored with polymer materials. Compare the results with the magnitude of effort when pulling out of a solid wooden sleepers, as well as with previous studies.
Authors and Affiliations
Denis Fast, Oleh Korniienko, Andrii Savin, Yevhenii Khrystenko
Keywords
Related Articles
- EP ID EP357061
- DOI 10.18664/1994-7852.175.2018.127081
- Views 52
- Downloads 0
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