ANALYSIS OF THE METHODS OF ASSESSING THE INFLUENCE OF CRACKS ON THE STRENGTH INDICATORS OF NON-RIGID PAVERMENT

Authors

  • А. Batrakova Kharkiv National Automobile and Highway University
  • S. Urdzik Kharkiv National Automobile and Highway University

DOI:

https://doi.org/10.33042/2522-1809-2022-4-171-70-75

Keywords:

non - rigid pavement, crack, deflection, reliability, stress - strain state, theoretical and empirical methods

Abstract

The analysis of methods that allow to take into account the influence of the crack on the stress - strain state of the pavement structure is carried out. The existing theoretical and empirical methods are considered. The first theoretical methods took into account the lack of contact between two elastic bodies, which occurred under the action of load. Based on these methods, more advanced models were developed, which aimed to solve the problem of determining the deflection of infinite and semi-infinite beams and slabs, without any shear between them. mathematical dependences for estimating the influence of a through crack on the condition of pavement and the influence of a through crack on the deflection of a slab based on an elastic base is considered. Empirical models provide for the possibility of taking into account the impact of fractures on the condition of pavement due to the reduction of the thickness of the cracked layer and due to the reduction of the modulus of elasticity of the pavement layer containing the crack. The method of estimating the change in the modulus of elasticity of non-rigid pavement due to the accumulation of fractures is analyzed, which assumes that during operation the layers of the coating lose their resolution. The proposed models leave open the impact of a single crack, a group of cracks, the size of the blocks on the distribution of pavement, as well as the thickness of the package of asphalt layers during the operation of the pavement structure.

According to the results of the analysis of models for assessing the condition of non-rigid pavement with destruction, it was determined that despite the significant amount of experimental data, the vast majority of models were obtained for specific road and climatic conditions and pavement designs and reflect the characteristics of the survey region. A significant number of scientists note that the use of methods of probabilistic analysis is a necessary condition for a comprehensive assessment of the condition of pavement. Therefore, the paper analyzes the methods of design and assessment of the condition of the pavement structure, taking into account the probabilistic methods of reliability analysis.

Author Biographies

А. Batrakova, Kharkiv National Automobile and Highway University

professor the department of road design, geodesy and land management

S. Urdzik, Kharkiv National Automobile and Highway University

Associate Professor the department of road design, geodesy and land management

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Published

2022-10-17

How to Cite

Batrakova А., & Urdzik, S. (2022). ANALYSIS OF THE METHODS OF ASSESSING THE INFLUENCE OF CRACKS ON THE STRENGTH INDICATORS OF NON-RIGID PAVERMENT. Municipal Economy of Cities, 4(171), 70–75. https://doi.org/10.33042/2522-1809-2022-4-171-70-75

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