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Evaluation of Improved Ground Characteristics of Displacement Type Sand Compaction Piles: An Experimental Approach

• Original Paper
• Published: 10 August 2024
• Volume 10 , article number  73 , ( 2024 )

Cite this article

• A. Ansari   ORCID: orcid.org/0009-0009-3704-4182 1 , 2 ,
• A. Sharma   ORCID: orcid.org/0009-0009-6590-432X 3 ,
• M. Samanta   ORCID: orcid.org/0000-0002-6017-725X 1 , 2 &
• R. Bhowmik 3  

The present study evaluates the characteristics of the improved ground due to the installation of the sand compaction piles (SCP). The experimental study was conducted in a large-size test tank filled with loosely deposited cohesionless soil. Single and groups of 9, 16 and 25 sand compaction piles, were installed in a square pattern at different center-to-center spacings (2 D , 3 D , 5 D, and 6 D, with D being the diameter of the pile). Their respective load-settlement characteristics were evaluated through loading a model footing plate up to a total settlement of 25 mm. The improvement in the load settlement characteristics was evaluated and compared with the unimproved ground. The load carrying capacity of the ground was observed to be significantly influenced by the number and spacing of the piles. The capacity of the improved ground, compared to untreated sand, increased by 2.8 to 4.1 times as the spacing between piles decreased, and by 4 to 6.15 times as the number of piles increased. The enhancement in the relative density of the soil around the SCPs was evaluated through miniature digital static cone penetration tests. Ground densification in the vicinity of the piles was also influenced by the center-to-center spacing between SCPs and the length of the piles. The results show that the influence zone around SCPs extend radially from 1.67 to 2.5 D .

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Data Availability

Some or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

The authors are thankful to the Director, CSIR-CBRI, for providing the environment, support and facilities to complete this study. The authors are also thankful to the staff of CSIR-CBRI for their kind help during the study.

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Geotechnical and Geohazard Group, Central Building Research Institute (CSIR-CBRI), Roorkee, Uttarakhand, 247667, India

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Contributions

Adnan Ansari: conceptualisation, investigation, methodology, writing—original draft. Aman Sharma: conceptualisation, investigation, methodology. Manojit Samanta: conceptualisation, investigation, methodology, supervision, writing—review & editing. Riya Bhowmik: methodology, writing—review & editing.

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Ansari, A., Sharma, A., Samanta, M. et al. Evaluation of Improved Ground Characteristics of Displacement Type Sand Compaction Piles: An Experimental Approach. Int. J. of Geosynth. and Ground Eng. 10 , 73 (2024). https://doi.org/10.1007/s40891-024-00583-x

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Received : 22 April 2024

Accepted : 21 July 2024

Published : 10 August 2024

DOI : https://doi.org/10.1007/s40891-024-00583-x

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• Sand compaction pile (SCP)
• Cohesionless soil
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