A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Geometrical Effect of Under-reamed Pile in Clay under Compression Load Numerical-Study
Recently, the use of deep foundations has increased as a result of the expansion in the construction of high-rise buildings, train tracks, and port berths. As a result of this expansion, it was necessary to use deep foundations that have low cost, high bearing loads, low settlement, and construction time, and such foundations are subjected to different types of loads such as lateral, vertical compression, and tension loads. This research paper will present one of the most important types of deep foundations that are aptly used in such structures and the most important factors affecting their bearing capacity and settlement in stiff clay. This type of deep foundation is called an under-reamed pile. The factors used in this study are pile length to diameter ratio L/D = 30, bulb diameter ratio (Du/D = 1.5, 2, 2.25, and 2.5), number of bulbs (N = 1, 2, and 3), and spacing ratio (S/D = 2 to 8). To investigate the effects of these parameters and obtain optimal results, the PLAXIS 3D was used. The analysis shows that the increase in bulb diameter increases the bearing load by 43%. Bulb spacing controls the failure mechanisms, whether cylindrical shear failure or individual failure and increases the capacity by 66% and 99%, respectively, for two and three bulbs when the bulb spacing becomes S/D = 8. When the number of bulbs increases to three, the capacity increases by 90%. If each bulb works individually, the bearing capacity doubles
Geometrical Effect of Under-reamed Pile in Clay under Compression Load Numerical-Study
Recently, the use of deep foundations has increased as a result of the expansion in the construction of high-rise buildings, train tracks, and port berths. As a result of this expansion, it was necessary to use deep foundations that have low cost, high bearing loads, low settlement, and construction time, and such foundations are subjected to different types of loads such as lateral, vertical compression, and tension loads. This research paper will present one of the most important types of deep foundations that are aptly used in such structures and the most important factors affecting their bearing capacity and settlement in stiff clay. This type of deep foundation is called an under-reamed pile. The factors used in this study are pile length to diameter ratio L/D = 30, bulb diameter ratio (Du/D = 1.5, 2, 2.25, and 2.5), number of bulbs (N = 1, 2, and 3), and spacing ratio (S/D = 2 to 8). To investigate the effects of these parameters and obtain optimal results, the PLAXIS 3D was used. The analysis shows that the increase in bulb diameter increases the bearing load by 43%. Bulb spacing controls the failure mechanisms, whether cylindrical shear failure or individual failure and increases the capacity by 66% and 99%, respectively, for two and three bulbs when the bulb spacing becomes S/D = 8. When the number of bulbs increases to three, the capacity increases by 90%. If each bulb works individually, the bearing capacity doubles
Geometrical Effect of Under-reamed Pile in Clay under Compression Load Numerical-Study
Nasr, Ahmed M. (author) / Azzam, Waseim R. (author) / Harran, Ibrahim S. (author)
2023-02-03
doi:10.30564/agger.v5i1.5276
Advances in Geological and Geotechnical Engineering Research; Volume 5, Issue 1 (2023): In Progress; 1-9 ; 2810-9384
Article (Journal)
Electronic Resource
English
DDC:
690
The Behavior of Single Under-Reamed Piles under Compression Load in Clay - Numerical Study
| DOAJ | 2022
UNDER-REAMED STEEL PIPE PILE, AND STEEL PIPE WITH UNDER-REAMED PORTION
| European Patent Office | 2021
Uplift Capacity Determination for an Under-Reamed Pile in Non-homogeneous Clay
| Springer Verlag | 2020
Under-reamed Pile Foundation in Clayey Soils
| British Library Conference Proceedings | 1996