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Geomechanics and Engineering Volume 32, Number 1, January10 2023 , pages 35-47 DOI: https://doi.org/10.12989/gae.2023.32.1.035 |
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Geotechnical problems in flexible pavement structures design |
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Mato G. Uljarević, Snježana Z. Milovanović, Radovan B. Vukomanović and Dragana D. Zeljić
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| Abstract | ||
| Deformability of road pavements in the form of ruts represent a safety risk for road users. In the procedures for dimensioning the pavement structure, the requirement that such deformations do not occur is imperatively included, which results in the appropriate selection of elements (material, geometry) of the pavement structure. Deformability and functionality, will depend of the correct design of pavement structure during exploitation period. Nevertheless, there are many examples where deformations are observed on the pavement structure, in the form of rutting at parts of the road with relatively short length, realised in the same climatic and the same geoenvironmental conditions. The performed analysis of deformability led to the conclusion that the level of deformation is a function of the speed of traffic. This effect is observed on city roads, but also outside of urban areas at roads with speed limits are significant, due to the traffic management, traffic jams (intersections, etc.). Still, the lower speed cause greater deformations. The authors tried to describe the deformability of flexible pavement structures, from the aspects of geotechnical problems, as a function of driving speed. Outcome of the analysis is a traffic load correction coefficient, in terms of using the existing methods of flexible pavement structures design. | ||
| Key Words | ||
| creep; flexible pavement structure; geotechnical problems; traffic load; traffic load correction coefficient | ||
| Address | ||
| Mato G. Uljarević, Snježana Z. Milovanović, Radovan B. Vukomanović and Dragana D. Zeljić: Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Bulevar Vojvode Stepe Stepanovića 77/3, Banja Luka, Bosnia and Herzegovina | ||