Features of Operation and Advantages of Piles with Widening Along the Body in Comparison with a Standard Bored Pile of Round Section

The article is devoted to carrying out calculations to study the efficiency of bored piles with widening in conditions of a two-layer base and comparing the results obtained with the operation of traditional round-section bored piles. For this purpose, a calculation scheme has been developed in the Plaxis 3D software package and calculations for real engineering and geological conditions of the construction site in Vietnam are given. Based on the data obtained, the bearing capacity of a bored pile with a broadening along the body was determined and compared with a round-section bored pile. In the article, the authors not only analyze the results obtained in the software package, but also describe the structures of the bored pile with broadening along the body. The applicability of this type of piles and the method of their manufacture are also considered in detail. Schemes of the device of the shell module of the bored pile with broadening along the body are given. Four stages are described for the installation of these piles. The necessary equipment is considered and a model of concrete construction equipment for the installation of a bored pile with broadening is shown. The table of maximum bearing capacity, obtained in the Plaxis 3D software package, and design schemes for two options are given: for a pile of circular section and a pile with widening. Based on the data obtained, graphs of the dependence of the pile precipitation on the load are built. In the analyses and the results in tabular form, a comparison of the obtained values was carried out. The conclusions show the advantages of using this type of piles and the need for further research in this direction.

D.Yu. CHUNYUK¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
CHAN VAN HUNG^1,2, Postgraduate;
S.M. SELVIYAN¹, Postgraduate(This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ National Research Moscow State University of Civil Engineering (26, Yaroslavskoye Highway, Moscow, 129337, Russian Federation)
² College of Industry and Construction (Socialist Republic of Vietnam, Quang Ninh Province, Wang Bi)

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