The Use of Weak Bases When Constructing Main Roads

The article is devoted to the problem of development of new economically unattractive territories for road construction. Often such areas have features in the form of weak bases that begin to build up. Ensuring the reliability and durability of the foundations of embankments of urban trunk roads is an important geotechnical task. To ensure the uninterrupted movement of urban transport, the issues of increasing their carrying capacity and stability are relevant. For this purpose it is possible to apply modern methods of reinforcement of a soil embankment, strengthening of the basis by a pile field of reinforced concrete piles, crushed stone piles. Each of the methods increases either stability or load-bearing capacity, so it is more expedient on the basis of technical and economic analysis to apply combined methods that give a win on several positions at once. On the basis of the research conducted, the conclusion is made about the rationality of a combination of gravel piles with reinforced embankment, whereby it is possible to use less robust geotextiles or increase the spacing of the reinforcement. This method is the most economical. Another combined option is the use of reinforced embankment together with concrete piles. This option is less attractive because of the high cost of the pile field arrangement.

N.S. SOKOLOV, Candidate of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.)
F.L. PAVLOV, Engineer-Designer

Chuvash State University named after I.N. Ulianov (15, Moskovsky Prospect, Cheboksary, Chuvash Republic, 428015, Russian Federation)

1. Ilyichev V.A., Mangushev R.A., Nikiforova N.S. Experience in the development of the underground space of Russian megacities. Osnovaniya, fundamenty i mekhanika gruntov. 2012. No. 2, pp. 17–20. (In Russian).
2. Ulitsky V.M., Shashkin A.G., Shashkin K.G. Geotekhnicheskoe soprovozhdenie razvitiya gorodov [Geotechnical maintenance of development of the cities]. Saint Petersburg: Georekonstruktsia. 2010. 551 p.
3. Ter-Martirosyan Z. G. Mehanika gruntov [Mechanic of soil]. M.: ASV. 2009. 550 р.
4. Shulyat’ev O.A., Minakov D.K. Technological precipitation device for diaphragm wall trench type. Vestnik Permskogo natsional’nogo issledovatel’skogo politekhnicheskogo universiteta. Stroitel’stvo i arkhitektura. 2017. No. 3 (8), pp. 41–50. (In Russian).
5. Mangushev R. A., Gurski A.V.Assessment of the impact of sheet pile indentation on additional precipitation of neighboring buildings. Geotechnica. 2016. No. 2, pp. 2–7. (In Russian).
6. Mangushev R. A., Sapin D.A. Taking into account the rigidity of the “wall in the ground” on the draft of neighboring buildings. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2015. No. 9, pp. 3–7. (In Russian).
7. Mangushev R.A., Konyushkov V.V., Kondratjeva L.N., Kirillov V.M. Method of calculation of technological settlemet of buildings foundations of adjacent development when excavating pits. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2019. No. 9, pp. 3–10. (In Russian). DOI: https://doi.org/10.31659/0044-4472-2019-9-3-10
8. Ter-Martirosyan Z.G., Ter-Martirosyan A.Z., Sobolev E.S. Analysis of data of geotechnical monitoring of the slabby bases of the big area. Geotekhnika. 2012. No. 4, рp. 28–34. (In Russian).
9. Mangushev R.A., Nikiforova N.S., Konyushkov V.V., Osokin A.I. Proektirovanie i ustroistvo podzemnykh sooruzhenii v otkrytykh kotlovanakh [Designing and the device of underground constructions in open ditches]. Moscow: ASV. 2013. 256 p.
10. Gotman A.L., Shemenkov Iu.M. Investigation of foundations behavior in tamped pits under the vertical load and their analysis. Vestnik Permskogo natsional’nogo issledovatel’skogo politekhnicheskogo universiteta. Stroitel’stvo i arkhitektura. 2015. No. 3, pp. 23–40. (In Russian).
11. Zhusupbekov A.ZH., Chang Der-Ven, Utepov Yelbek, Borbekova Karlygash. Omarov A.R. Assessment of the bearing capacity of driven piles. Osnovaniya, fundamenty i mekhanika gruntov. 2019. No. 2, p. 26. (In Russian).
12. Sokolov N.S. Electroimpulse Installation For The Production Of Flight Augering Piles. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2018. No. 1–2, рp. 62–66. (In Russian).
13. Sokolov N.S. Criteria of economic efficiency of use of drilled piles. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2017. No. 5, pp. 34–38. (In Russian).
14. Sokolov N.S. Technology for increasing the bearing capacity of the base. Stroitel’nye Materialy [Construction Materials]. 2019. No. 6, pp. 67–71. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-771-6-67-71
15. Sokolov N.S. Geotechnical technology for preventing inundation of plain territories. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2019. No. 9, pp. 43–47. (In Russian). DOI: https://doi.org/10.31659/0044-4472-2019-9-43-47