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

Main Article Content

Viktor Nosenko
Ostap Kashoida

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
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Статті
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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