Determination of the impact of pile modeling methods on the distribution of forces in the pile foundation
Article Sidebar
Main Article Content
Abstract
The effect of the pile and the soil environment modeling method on the distribution of forces in the pile foundation and its deformation was studied and analyzed.
Based on the obtained results, the difference in the distribution of forces in piles and the difference in the settlement of the pile foundation was demonstrated. A comparison is drawn between the models, in which elements of the scheme such as "base" and "foundation" were made using different methods. The zones where the peak forces are the largest and the smallest were marked.
The structural scheme and geological conditions are based on the existing project, as well as engineering and geological investigations.
The finite element model of the building consists of a base, underground, and above-ground structures. A linear-elastic model with the following soil parameters was used to simulate the work of the base: E – modulus of elasticity; V – Poisson's ratio; as well as the elastoplastic Mohr-Coulomb model, in which the soil is defined by the following parameters: E – modulus of elasticity; V– Poisson's ratio; c – cohesion; φ is the friction angle. The calculation was performed with the help of the LIRA-SAPR 2017 software complex.
In order to improve the accuracy of the calculation of the results, the identification of the parameters of the base was carried out, where the results of in-situ test piles for static indentation were used as the initial data. The soil parameters, which were obtained in the result of identification, were applied to the model of the soil environment in the calculation scheme. As a result, it is possible to assess the influence of the identification parameters on the change in the stress-strained state (SSS) of the foundation structures as well as compare the forces values in piles and the deformation of the foundation before and after the identification.
With the development of technologies and software complexes, the number and variability of calculation methods were increasing, as well as the variety of calculation models. Each calculation model is unique and created with a certain goal – to make the calculation results closer to the real work of foundation structures. It is necessary to make the most effective and rational modeling method to achieve the goals set, as well as to obtain a quick and accurate result.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors are published in this journal, agree to the following conditions:
Authors reserve the right to authorship of their work and transfer the journal the right of the first publication of this work under the terms of the Creative Commons Attribution License, which allows other persons to freely distribute published work with mandatory reference to authors original work and the first publication of work in this journal.
The authors have the right to enter into independent additional agreements on the non-exclusive dissemination of the work in the form in which it was published by this journal (for example, to post work in the electronic repository of the institution or to publish as part of a monograph), provided that the reference to the first publication of the work in this journal is maintained.
The journal's policy allows and encourages the authors to place the manuscript of the work on the Internet (for example, in the institutions' storehouses or on personal websites), both for presenting this manuscript to the editorial office and during its editorial processing, as this contributes to the creation of productive scientific discussion and positively affects the efficiency and dynamics of citing the published work (see The Effect of Open Access).
References
Pidlutskyi V.L. Research of the interaction of piles with different lengths and the grillage in the foundations of high-rise buildings / V.L. Pidlutskyi, I.P. Bоyko, V.S. Nosenko // Civil and Environmental Engineering Reports №26. – 2017. – p. 059-068.
Носенко В.С. Числове моделювання напружено-деформований стану пальового фунда-менту будинку з використанням різних моделей ґрунтової основи. / В.С. Носенко, О.О. Кашоїда // Основи і фундаменти: Міжвідомчий науково-технічний збірник. – К.: КНУБА. – 2019. – Вип. 38. – С. 34-43.
Носенко В.С. Визначення напружено-деформованого стану групи паль шляхом числового моделювання їхвзаємодії з основою за даними польових досліджень. / В.С. Носенко, О.О. Кашоїда // Основи і фундаменти: Міжвідомчий науково-технічний збірник. – К.: КНУБА. – 2021. – Вип. 43. – С. 87-100.
Бойко І.П. Методика ідентифікації деформаційних параметрів піщаного грунтового масиву. / І.П. Бойко, А.О. Олійник, А.О. Галета // Основи і фундаменти: Міжвідомчий науково-технічний збірник. – К.: КНУБА. – 2021. – Вип. 42. – С. 53-63.
Бойко І.П. Ідентифікація параметрів грунтів на основі результатів натурних випробувань паль. / І.П. Бойко, Л.О. Скочко, М.В. Хоронжевський // Основи і фундаменти: Міжвідомчий науково-технічний збірник. – К.: КНУБА. – 2021. – Вип. 42. – С. 9-18.
Pidlutskyi V.L., Bоyko I.P., Nosenko V.S. (2017). Research of the interaction of piles with different lengths and the grillage in the foundations of high-rise buildings. Civil and Environmental Engineering Reports, 26(3), 059-068.
Nosenko V.S., Kashoida О.О. (2019). Chyslove modelyuvannya napruzheno-deformovanyy stanu palʹovoho funda-mentu budynku z vykorystannyam riznykh modeley gruntovoyi osnovy. [Numerical simulation the stress-strain state of the pile foundation building using different soil models]. Osnovu i fundamenty: Mizhvidomchyj naukovo-tekhnichnyj zbirnyk. Kyiv: KNUBA, 38, 34-43 (in Ukrainian).
Nosenko V.S., Kashoida О.О. (2021). Vyznachennya napruzhenoho stanu hrupy palʹ shlyakhom chyselʹnoho modelyuvannya yikh vzayemodiyi z osnovoyu za danymy naturnykh doslidzhenʹ. [Determination of the stress-strain state of a group of piles by numerical simulation of their interaction with the base according to field research data]. Osnovu i fundamenty: Mizhvidomchyj naukovo-tekhnichnyj zbirnyk. Kyiv: KNUBA, 43: 87-100 (in Ukrainian).
Bоyko I.P., Oleynik А.О., Haleta А.О. (2021). Metodyka identyfikatsiyi deformatsiynykh parametriv pishchanoho hruntovoho masyvu. [Identification methodology of deformation pa- rameters of sandy soil massif]. Osnovu i fundamenty: Mizhvidomchyj naukovo-tekhnichnyj zbirnyk. Kyiv: KNUBA, 42: 53-63 (in Ukrainian).
Bоyko I.P., Skochko L.O., Khoronzhevs-kyi M.V. (2021). Identyfikatsiya parametriv gruntiv na osnovi rezulʹtativ pryrodnykh vyprobuvanʹ palʹ. [Identification of soil parameters based on the results of field tests of piles]. Osnovu i fundamenty: Mizhvidomchyj naukovo-tekhnichnyj zbirnyk. Kyiv: KNUBA, 42: 9-18 (in Ukrainian).