ANALYSIS OF THE MECHANISM OF REINFORCEMENT OF THE ROAD STRUCTURE WITH A UNLOADING SECTION

ABSTRACT

Shevchuk L.V. Analysis of the mechanism of reinforcement of the road structure with a unloading section. Visnyk National Transport University. Series «Technical sciences». Scientific and Technical Collection. - Kyiv: National Transport University, 2021. - Issue 1 (48).

The problem posed is about the mechanism for reinforcing the road structure with a slab with an unloading cut. The reasons for the appearance of transverse cracks in the upper layer of the road surface in winter have been investigated. Solvable equations are formulated, their finite element analogs are constructed. Cases of loads at different values of elastic module and plate sizes are considered.

At low temperatures, the upper layers of the road try to reduce their length, however, due to their almost infinite length, they cannot do this and transverse disordered cracks appear in the upper layer, which, due to the action of transport loads and the forces of frozen water, lead to further delamination and destruction of the road structure. Therefore, the introduction into another layer of a reinforced slab made of a stiffer and more durable material that is capable of absorbing increased stresses allows the upper layer to shorten and lengthen freely and removes the arising longitudinal thermal stress. Due to the fact that this plate is located in the zone of stress concentration, these stresses become less dangerous.

KEYWORDS: AUTOMOBILE ROAD, ASPHALT-CONCRETE COATING, LOADING RISK, TRACKED TRACKS, TRANSPORT LOADS, STRESS FIELD, THERMO ELASTIC STATE.

BUSINESS MODEL.

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AUTHOR

Shevchuk L. V., Ph.D., National Transport University, assistant department of mathematics, e-mail: ludmilashevchuk25@gmail.com, tel. +380667153633, Ukraine, 01010, Kyiv, Boychuka str.42, of.511, orcid.org/0000-0002-5748-9527

REVIEWER

Gaidaichuk V.V., Ph.D., Engineering (Dr.), professor, Kyiv National University of Structures and Architecture, Head of Department of Theoretical Mechanics, Kyiv, Ukraine.

Loza I.A., Ph.D., Physics and Mathematics (Dr), professor, National Transport University, Head of Department of Theoretical Mechanics, Kyiv, Ukraine.

Article language: Ukrainian

Open Access: http://publications.ntu.edu.ua/visnyk/48/382-391.pdf

Print date: 15.03.2021

Online publication date: 05.04.2021

 

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