Advanced design of friction piles for operation in complicated soil conditions

• Published in: Journal of physics. Conference series 2020-01, Vol.1441 (1), p.12094
• Main Authors: Gruzin, A V, Gruzin, V V, Rusanova, A D
• Format: Article
• Language: English
• Subjects: Construction materials; Cross-sections; Foundation construction; Friction; Friction piles; Laboratories; Mathematical analysis; Operating costs; Physics; Pile bearing capacities; Pile foundations; Soil conditions; Soils
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1441/1/012094

Development of advanced designs for friction piles is a problem solution to reduce material costs at the stage of a pile foundation construction in complicated soil conditions. The constructive approach aimed to a rational use of construction materials in production of piles is proposed in this paper. The idea of technical proposal is to change a shape of a pile cross-section to increase the length of a perimeter limiting the area, invariable in a size. An equilateral triangle cross-section meets fully these requirements. Results of theoretical studies and the analysis of existing calculation method of bearing capacity of a friction pile in a foundation soil showed a possibility of practical implementation of this engineering approach. The utilization of a pile with a cross-section in a shape of equilateral triangle increases bearing capacity of a pile in a foundation soil up to 28.6 % in comparison with a round cross-section and up to 14 % compared to a square cross-section. Conducted laboratory studies confirmed the correctness of theoretical calculations. The application of obtained results of theoretical and laboratory studies in the construction of pile foundations in complicated soil conditions will not only reduce material costs for the foundation production, but will also decrease transportation costs which are rather high under development of new fields.