MATEC Web Conf.
Volume 230, 20187th International Scientific Conference “Reliability and Durability of Railway Transport Engineering Structures and Buildings” (Transbud-2018)
|Number of page(s)||6|
|Section||Railways, Subways and Industrial Transport|
|Published online||16 November 2018|
A longer service life of intermediate elastic fastenings KPP-5 due to application of pads PRP-3.2
Track and Track Facility Department, Ukrainian State University of Railway Transport, Feuerbach Sq. 7, 61050, Kharkiv, Ukraine
2 The Kupiansk–Uzlovaya track maintenance department, Zheleznodorozhnaya Sq. 10, 63709 Kupiansk, Ukraine
* Corresponding author: firstname.lastname@example.org
Since 2003 Ukrainian railways have used KPP-5 intermediate elastic fastenings. These fastenings unlike their predecessors (for example, terminal-bolted fastenings (KB) widely used on railways), first of all, have fewer elements. The KPP-5 fastening does not include screw joints, which considerably increases the pressing force between rail and tie, and resistance to track displacement forces. This may lead to reduction of the total labour input for routine track maintenance due to cutback of track works needed for mounting terminal and insert bolts. The article deals with forecasting the operational life of PRP 3.2 (9mm depth) and PRP 3.2.1 pads (10mm depth). In engineering the operational life is a time interval (for the railway track – tonnage passed) during which the element fulfils its functions. One of the main reasons why the assembly unit KPP-5 fails is low pressing forces between rail and tie. It occurs due to many processes; among the basic ones is the changed characteristic of underrail pads. And the application of new types of pads – PRP 3.2 (9mm) and PRP 3.2.1. (10mm) may solve this problem.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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