The behavior of single under-reamed piles under compression load in clay : numerical study
Joint Authors
Azzam, W. R.
Harran, Ibrahim S.
Nasr, Ahmad Muhammad
Source
Journal of Engineering Research
Issue
Vol. 6, Issue 3 (30 Sep. 2022), pp.1-7, 7 p.
Publisher
Tanta University Faculty of Engineering
Publication Date
2022-09-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Topics
Abstract EN
Under-reamed piles with one bulb or more have been widely used in various types of soil to support structures to resist compression, lateral, and uplift load.
in the current study, a 3D numerical model done by PLAXIS 3D software was used to predict the behavior of floating under-reamed piles subjected to compression load in medium clay.
the study focuses on the effect of pile geometrical features on bearing load such as bulb spacing, bulb diameter, and the bulbs number compared with the conventional pile.
considering medium clay as a single layer in the analysis with the cohesion of 38 kN / m2, the comparison of results for multi under-reamed pile compared with a conventional pile takes into account the bulbs number ranging from one to three, bulb diameter ratio (Du / D) from 1.5 to 2.5, the spacing ratio (S / D) from center to center of bulb from 2 to 8 and bulb location, the pile length is constant in this study.
the linear elastic constitutive model was considered to simulate the pile material, and the Mohr-Coulomb model was chosen to represent the clay surrounding the pile.
the results of the numerical model show that when the bulb diameter ratio becomes 2.50, the bearing load increases by 50.31% for an under-reamed pile with a single bulb compared with a pile without a bulb.
also, using an under-reamed pile with a bulb diameter ratio (Du / D = 2.5), bulb spacing ratio (S / D = 8), and when the bulbs number were three, the bearing load increased by 165.50% compared with a pile without a bulb.
moreover, if bulb spacing ratio (S / D) increased from 2 to 8, the bearing load increased by 25.15% for a bulb diameter ratio (Du / D = 2.5) and the bulbs number were two.
American Psychological Association (APA)
Nasr, Ahmad Muhammad& Azzam, W. R.& Harran, Ibrahim S.. 2022. The behavior of single under-reamed piles under compression load in clay : numerical study. Journal of Engineering Research،Vol. 6, no. 3, pp.1-7.
https://search.emarefa.net/detail/BIM-1454592
Modern Language Association (MLA)
Azzam, W. R.…[et al.]. The behavior of single under-reamed piles under compression load in clay : numerical study. Journal of Engineering Research Vol. 6, no. 3 (Sep. 2022), pp.1-7.
https://search.emarefa.net/detail/BIM-1454592
American Medical Association (AMA)
Nasr, Ahmad Muhammad& Azzam, W. R.& Harran, Ibrahim S.. The behavior of single under-reamed piles under compression load in clay : numerical study. Journal of Engineering Research. 2022. Vol. 6, no. 3, pp.1-7.
https://search.emarefa.net/detail/BIM-1454592
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 7
Record ID
BIM-1454592