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Bearing Capacity of Annulus Stone Column Double-Encapsulated with Geotextiles
https://orcid.org/0000-0001-6863-6214
https://orcid.org/0000-0001-6290-2913
The behavior of annulus stone columns in soft clays is significantly influenced by the outer-to-inner diameter ratio. For this reason, in the present study, a comprehensive experimental investigation program was undertaken in the laboratory on a soft clay from Warangal, India, by varying its water content for achieving different undrained shear strength values and to determine the load-carrying capacity of conventional and annulus stone columns with different outer-to-inner diameter ratios that were double-encapsulated with geotextile. Investigations were also extended to determine the optimum L/D ratio and spacing between the groups of annulus stone columns. Based on these studies, a theoretical framework is developed for interpreting and determining the load-carrying capacity of the stone columns. The studies presented in this paper offer a novel ground improvement technique to enhance the load-carrying capacity of soft soils.
Conventional in situ pile foundations and stone columns have been extensively used in geotechnical engineering to support widespread loads arising from infrastructure, such as oil storage tanks and embankments on soft soils. However, stone columns typically fail, due to bulging action. Therefore, the geotechnical engineering community uses pile foundations to alleviate failures and support widespread loads on soft soils. However, a significant decrease in the cost of the project and carbon footprint is realized when stone columns replace conventional pile foundations. Therefore, the proposed geosynthetic double-encapsulated annulus stone columns with enhanced confining resistance could be a suitable replacement for conventional stone columns and pile foundations to support widespread loads. The results presented in this paper show a significant reduction in bulging when the conventional stone columns are replaced with annulus stone columns. However, the installation technique adopted in the model tests differs from those in the field. Full-scale field testing of the proposed technique is required to understand the strengths and limitations of the proposed design approach.
Bearing Capacity of Annulus Stone Column Double-Encapsulated with Geotextiles
https://orcid.org/0000-0001-6863-6214
https://orcid.org/0000-0001-6290-2913
The behavior of annulus stone columns in soft clays is significantly influenced by the outer-to-inner diameter ratio. For this reason, in the present study, a comprehensive experimental investigation program was undertaken in the laboratory on a soft clay from Warangal, India, by varying its water content for achieving different undrained shear strength values and to determine the load-carrying capacity of conventional and annulus stone columns with different outer-to-inner diameter ratios that were double-encapsulated with geotextile. Investigations were also extended to determine the optimum L/D ratio and spacing between the groups of annulus stone columns. Based on these studies, a theoretical framework is developed for interpreting and determining the load-carrying capacity of the stone columns. The studies presented in this paper offer a novel ground improvement technique to enhance the load-carrying capacity of soft soils.
Conventional in situ pile foundations and stone columns have been extensively used in geotechnical engineering to support widespread loads arising from infrastructure, such as oil storage tanks and embankments on soft soils. However, stone columns typically fail, due to bulging action. Therefore, the geotechnical engineering community uses pile foundations to alleviate failures and support widespread loads on soft soils. However, a significant decrease in the cost of the project and carbon footprint is realized when stone columns replace conventional pile foundations. Therefore, the proposed geosynthetic double-encapsulated annulus stone columns with enhanced confining resistance could be a suitable replacement for conventional stone columns and pile foundations to support widespread loads. The results presented in this paper show a significant reduction in bulging when the conventional stone columns are replaced with annulus stone columns. However, the installation technique adopted in the model tests differs from those in the field. Full-scale field testing of the proposed technique is required to understand the strengths and limitations of the proposed design approach.
Bearing Capacity of Annulus Stone Column Double-Encapsulated with Geotextiles
https://orcid.org/0000-0001-6863-6214
https://orcid.org/0000-0001-6290-2913
The behavior of annulus stone columns in soft clays is significantly influenced by the outer-to-inner diameter ratio. For this reason, in the present study, a comprehensive experimental investigation program was undertaken in the laboratory on a soft clay from Warangal, India, by varying its water content for achieving different undrained shear strength values and to determine the load-carrying capacity of conventional and annulus stone columns with different outer-to-inner diameter ratios that were double-encapsulated with geotextile. Investigations were also extended to determine the optimum L/D ratio and spacing between the groups of annulus stone columns. Based on these studies, a theoretical framework is developed for interpreting and determining the load-carrying capacity of the stone columns. The studies presented in this paper offer a novel ground improvement technique to enhance the load-carrying capacity of soft soils.
Conventional in situ pile foundations and stone columns have been extensively used in geotechnical engineering to support widespread loads arising from infrastructure, such as oil storage tanks and embankments on soft soils. However, stone columns typically fail, due to bulging action. Therefore, the geotechnical engineering community uses pile foundations to alleviate failures and support widespread loads on soft soils. However, a significant decrease in the cost of the project and carbon footprint is realized when stone columns replace conventional pile foundations. Therefore, the proposed geosynthetic double-encapsulated annulus stone columns with enhanced confining resistance could be a suitable replacement for conventional stone columns and pile foundations to support widespread loads. The results presented in this paper show a significant reduction in bulging when the conventional stone columns are replaced with annulus stone columns. However, the installation technique adopted in the model tests differs from those in the field. Full-scale field testing of the proposed technique is required to understand the strengths and limitations of the proposed design approach.
Bearing Capacity of Annulus Stone Column Double-Encapsulated with Geotextiles
Int. J. Geomech.
Abid, Mohammed Shakeel (author) / Rathod, Deendayal (author) / Vanapalli, Sai K. (author)
2023-02-01
Article (Journal)
Electronic Resource
English
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