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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Grishin Ilya Valerievych assistant E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 Piskunov Aleksandr Alekseevich doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Institute of roads, buildings and structures of Russian institute of transport The organization address: 127055, Russia, Moscow, Minaevsky per., 2
Title of the articleModeling the process of deformation of asphalt concrete pavement of bridges under temperature exposure
Abstract.Problem statement. The purpose of the study is to simulate the process of deformation of asphalt concrete pavements of bridges under temperature exposure. The development of the model was caused by the need to assess the effect of temperature stresses on the stress-strain state of asphalt concrete pavement of bridges with the simplest design schemes. The selection was made according to the criterion of compliance with the results of numerical modeling. Results. As a result of comparing the analytical solutions obtained using the proposed models with the results of numerical modeling, the following conclusions were made: - tensile stresses reach their maximum in the upper fiber of the asphalt concrete layer; - thermal stresses increase from the edge to the center of the plate; - an increase in stresses caused by an uneven temperature distribution over the thickness of asphalt concrete does not exceed 7 % in the elastic setting and, taking into account stress relaxation, may not be taken into account; - an increase in the rigidity of the base of the asphalt concrete layer by a factor of 1000 leads to an increase in maximum stresses of no more than 10 % in the elastic setting, which, taking into account the relaxation of stresses, gives reason to use the selected model for both metal and reinforced concrete bridges. Conclusions. The significance of the results for the construction industry lies in the possibility of a more complete understanding of the causes of the destruction of asphalt pavement of bridges and, accordingly, the possibility of taking these factors into account when assigning the thickness and physico-mechanical parameters of asphalt pavements.
Keywords.thermally stressed state of multilayer plates, uniform deformation hypothesis, inclined hypothesis, broken line hypothesis, numerical simulation of thermally stressed state.
For citations:Grishin I.V., Piskunov A.A. Modeling the process of deformation of asphalt concrete pavement of bridges under temperature exposure // Izvestiya KGASU. 2019. №3(49) P.221-228.


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