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Akhmadjonov M.Z., Valiev Sh.N., Ovchinnikov I.G. Analysis of the stress-strain state of a multilayer structure simulating the behavior of pavement on a bridge deck. Russian Journal of Transport Engineering. 2025; 12(1). Available at: https://t-s.today/PDF/14SATS125.pdf (in Russian).

Analysis of the stress-strain state of a multilayer structure simulating the behavior of pavement on a bridge deck

¹Mirali Z. Akhmadjonov, ^{1, 2, 3}Sherali N. Valiev, ^{2, 4, 5, 6}Igor G. Ovchinnikov

¹Moscow Automobile and Road Construction State Technical University, Moscow, Russia
²Industrial University of Tyumen, Tyumen, Russia
³Small Innovative Enterprise «Scientific and Engineering Center of Bridges and Structures», Moscow, Russia
⁴Perm National Research Polytechnic University, Perm, Russia
⁵Ural State University of Railway Transport, Ekaterinburg, Russia
⁶Ufa State Oil Technical University, Ufa, Russia

Corresponding author: Igor G. Ovchinnikov, e-mail: bridgesar@mail.ru

Abstract. The paper presents an analysis of the current state of computational modeling of structural behavior and emphasizes that, in calculations, attention should be paid not only to the conditionality of structural calculation schemes but also to the possibility of deviation of the forces obtained from these schemes from the actual distribution of forces in the structures. It is necessary to consider the potential variability of the calculated material properties, the possibility of deviations of loads from their design values-which may not always be in the direction of reduction-as well as the adverse effects of an aggressive operational environment and ambient temperature.

A methodology and block diagram of the algorithm for calculating a multilayer plate, to which the problem of simulating the behavior of pavement on a reinforced concrete bridge deck under combined load and temperature effects is reduced, are presented. This methodology involves the use of an iterative algorithm in combination with the grid method. Comparison with known solutions for particular cases has shown that this methodology yields reliable results and can be used for numerical studies.

A numerical study was conducted on the behavior of a multilayer simply supported plate simulating the behavior of multilayer pavement on a bridge deck, taking into account the nonlinearity and different resistance of the constituent materials to tension and compression under load and thermal field. In particular, it is shown that the magnitude of the bending moment in the pavement is only 0,76 % of the moment arising in the multilayer structure consisting of a reinforced concrete bridge deck and multilayer pavement, which includes waterproofing, compacted asphalt concrete, and cast asphalt concrete.

Keywords: deformation approach; modeling; bridge deck; pavement; thermal effect; stress-strain state

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