Numerical simulation the stress-strain state of the pile foundation building using different soil models

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DOI: https://doi.org/10.32347/0475-1132.38.2019.34-43
Keywords:
Pile foundation, numerical simulation, variable stiffness coefficients, volumetric soil massif.

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Viktor Nosenko
Київський національний університет будівництва і архітектури 31, просп. Повітрофлотський, Київ, Україна, 03037
https://orcid.org/0000-0002-8261-1846
Ostap Kashoida
Київський національний університет будівництва і архітектури 31, просп. Повітрофлотський, Київ, Україна, 03037
https://orcid.org/0000-0002-9234-4489

Abstract

Numerical simulation investigates the interaction of the elements of the system "base - foundation - superstructures" under different variants models of the soil. Currently, high-rise buildings and structures are actively being built in the city. Frequent use of pile foundations is due to the fact that they have a greater bearing capacity than conventional foundations shallow laying. At the design stage, engineers are asked a question; which model of deformation of the soil medium is higher to choose? A promising area of pile foundation design is to increase the cost-effectiveness and reliability of design solutions through the use of a rational number of piles and the effective use of their bearing capacity. The work compares the stress-strain state of the systems "base - foundation - superstructures", modeled in different variants: 1) without taking into account the base (the tip of the pile is rigidly trapped); 2) by means of the stiffness coefficients of the substrate, which can be specified at different stages of calculation; 3) modeling the soil mass with three dimensional finite elements. Comparison results of the calculation with different variants of soil modeling. The influence of the pile raft when considering it as a supporting element on the stress-strain state of the foundations is considered. The force redistribution in piles has been investigated depending on different variants of soil modeling. Characteristic piles are distinguished: average, angular, in the core (central zone), peripheral. The redistribution of effort between the piles and the base plate is revealed. Numerical simulation was performed in the software complex "Lira-SAPR 2018".

Article Details

How to Cite
Nosenko, V., & Kashoida, O. (2019). Numerical simulation the stress-strain state of the pile foundation building using different soil models. Bases and Foundations, (38), 34–43. https://doi.org/10.32347/0475-1132.38.2019.34-43
Issue
No. 38 (2019): Bases and Foudations
Section
Статті
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Author Biographies

Viktor Nosenko, Київський національний університет будівництва і архітектури 31, просп. Повітрофлотський, Київ, Україна, 03037

Доцент кафедри геотехніки к.т.н., доц.

Ostap Kashoida, Київський національний університет будівництва і архітектури 31, просп. Повітрофлотський, Київ, Україна, 03037

Аспірант кафедри геотехніки.

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