A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation on multi under reamed piles with small bulb diameter in clay
This paper presents a study conducted on a multi-under-reamed pile having a small bulb size, but more than two in number. The proposed design is aimed to mobilize the side friction along the cylindrical surface formed between the bulbs to a greater extent and thereby enhance the load-carrying capacity with the minimum use of concrete. Pile load test was carried out on full-scale models of the conventional pile, and the proposed multi-tiny bulb pile. Finite-element analyses were performed to analyse the capacity of the proposed pile and to compare it with conventional bored cast-in-situ piles tested in the field. The validated model was then used to study the effect of various parameters on load-deformation behaviour and to understand the deformation contours of Multi-tiny bulb pile and to compare it with other existing pile geometries. It was found that Multi-tiny bulb piles of bulb diameter equal to the shaft diameter of conventional piles mobilize almost the same capacity as that of a solid conventional pile of uniform shaft diameter equal to that of bulb diameter of the former. The volume of material consumed by a Multi-tiny bulb pile to attain this was only 42% of a conventional pile considered for the study. The study suggests that Multi-tiny bulb piles if properly employed in the field with quality control can effectively replace the conventional piles in clayey stratum and also is a cost-effective option in terms of material input.
Investigation on multi under reamed piles with small bulb diameter in clay
This paper presents a study conducted on a multi-under-reamed pile having a small bulb size, but more than two in number. The proposed design is aimed to mobilize the side friction along the cylindrical surface formed between the bulbs to a greater extent and thereby enhance the load-carrying capacity with the minimum use of concrete. Pile load test was carried out on full-scale models of the conventional pile, and the proposed multi-tiny bulb pile. Finite-element analyses were performed to analyse the capacity of the proposed pile and to compare it with conventional bored cast-in-situ piles tested in the field. The validated model was then used to study the effect of various parameters on load-deformation behaviour and to understand the deformation contours of Multi-tiny bulb pile and to compare it with other existing pile geometries. It was found that Multi-tiny bulb piles of bulb diameter equal to the shaft diameter of conventional piles mobilize almost the same capacity as that of a solid conventional pile of uniform shaft diameter equal to that of bulb diameter of the former. The volume of material consumed by a Multi-tiny bulb pile to attain this was only 42% of a conventional pile considered for the study. The study suggests that Multi-tiny bulb piles if properly employed in the field with quality control can effectively replace the conventional piles in clayey stratum and also is a cost-effective option in terms of material input.
Investigation on multi under reamed piles with small bulb diameter in clay
George, Balu (author) / Hari, G (author) / Alexander, Christina (author)
International Journal of Geotechnical Engineering ; 16 ; 462-470
2022-04-21
9 pages
Article (Journal)
Electronic Resource
Unknown
Ultimate Lateral Load Capacity of Single Bulb Under-Reamed Piles
| British Library Conference Proceedings | 2002
Uplift Load Bearing Capacity of Blow Reamed Bulb Piles in Soft Saturated Clay
| British Library Conference Proceedings | 1993
| Online Contents | 2009
Full-Scale Field Study of Instrumented Under-Reamed Piles in Clay
| Springer Verlag | 2024
Multiple Basements on Deeper Under-Reamed Piles
| British Library Conference Proceedings | 1994