Open AccessAsphalt concrete pavements of bridges under thermal stress
Author(s) -
Ilya Grishm,
R. A. Kayumov,
G. P. Ivanov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/890/1/012032
Subject(s) - asphalt , asphalt concrete , rigidity (electromagnetism) , structural engineering , materials science , stress (linguistics) , thermal , asphalt pavement , geotechnical engineering , composite material , engineering , physics , meteorology , linguistics , philosophy
The goal of our research is to develop an optimal model of asphalt concrete pavements of bridges under thermal stress. The development of the model was stimulated by the demand to assess the effect of temperature stresses on the destruction of asphalt concrete pavement of bridges while keeping spending to the minimum, which led to the need to choose, if possible, the simplest model. The search was carried out according to the criterion of compliance with the results of numerical modeling in an elastic setting. As a result of the study, we have made the following conclusions: -maximum tensile stresses occur in the upper layers of asphalt concrete; -the increase in stresses caused by the uneven distribution of temperature over the thickness of asphalt concrete does not exceed 7 % in the elastic setting, and taking into account stress relaxation this can be ignored; -an increase in the rigidity of the base under the asphalt concrete layer by a factor of 1000 leads to an increase in stresses of not more than 10 % in the elastic setting, which gives reason to use the considered model for both metal and reinforced concrete bridges.