Updating the linear telescopic pile settlement model
https://doi.org/10.22227/1997-0935.2025.5.718-733
Abstract
Introduction. The expediency of increasing the accuracy and generality of simplified solutions for calculating the settlement of single piles is shown. Such solutions are recommended by the building codes of the Russian Federation for assessing the value of the design settlement of piles, and are also used to determine the parameters of contact models in the development of pile foundation structures.
Materials and methods. The theoretical analysis and comparison of calculation methods based on the approximation of pile work in an elastic half-space are performed. A verification and update of the dependencies of the main analytical solution based on the telescopic scheme of the elastic massif containing the pile is developed. Comparisons of the calculation results by various methods are presented.
Results. The analysis revealed a number of discrepancies depending on the parameters of the piles and the soil base. Recommendations for the application of the considered solutions are developed and the area of their application is established — assessment of the initial linear resistance of the pile and the corresponding parameters of the contact model used to design the pile foundation.
Conclusions. Simplified solutions for calculating the settlement of single piles are in demand in construction practice; increasing the accuracy and generality of such solutions ensures the definition of adequate parameters of contact models for developing reliable and rational designs of pile foundations. The scope of the updated solution is the assessment of the initial linear resistance of the pile. The advantage of the updated solution is the clearly identified share of the pile heel, which allows for a separate assessment of the work of its lateral surface, in particular in current problems with a pull-out load on the pile or by taking into account the “switching off” of the pile heel due to loose slurry under the heel of a bored pile.
About the Authors
A. G. Alekseev
Moscow State University of Civil Engineering (National Research University) (MGSU); Research, Design and Survey and Design and Technological Institute of Foundations and Underground Structures named after N.M. Gersevanov of the Research Center “Construction”
Russian Federation
Russian Federation
Andrej G. Alekseev — Doctor of Technical Sciences, Associate Professor, Professor of the Department of Soil Mechanics and Geotechnical Engineering; Head of the Center for Geocryological and Geotechnical Research
26 Yaroslavskoe shosse, Moscow, 129337;
59 Ryazansky prospect, Moscow, 109428
RSCI AuthorID: 873091, ResearcherID: AAB-8070-2020
S. G. Bezvolev
Research, Design and Survey and Design and Technological Institute of Foundations and Underground Structures named after N.M. Gersevanov of the Research Center “Construction”
Russian Federation
Russian Federation
Stepan G. Bezvolev — Candidate of Technical Sciences, Senior Researcher
59 Ryazansky prospect, Moscow, 109428
RSCI AuthorID: 271303, Scopus: 6602971111
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Review
For citations:
Alekseev A.G., Bezvolev S.G. Updating the linear telescopic pile settlement model. Vestnik MGSU. 2025;20(5):718-733. (In Russ.) https://doi.org/10.22227/1997-0935.2025.5.718-733
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