Indian Journal of Science and Technology

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Improvement of Soft Soil Performance using Stone Columns Improved with Circular Geogrid Discs


Affiliations
1 Department of Civil Engineering, GMR Institute of Technology, Razam - 532127, Andhra Pradesh, India
2 Department of Civil Engineering, Andhra University, Visakhapatnam - 530003, Andhra Pradesh, India
 

Objective: To study the load carrying capacity and settlement behavior of the soft soils improved with lateral reinforced stone columns. Methods/Analysis: In this study, the soft soil is reinforced with stone columns by providing lateral circular geogrid discs within the column. The tests were conducted on plain clay bed, plain stone column and stone column with geogrid by placing reinforcement at two different spacing i.e., at D and D/2 over full column length and investigated the effect of reinforcement to improve the properties of the clay bed. Findings: By improving the soft soil with stone column, the ultimate load of the soil has been increased by about 117% and is increased by 16% and 41% by placing the circular geogrid reinforcement at D spacing and D/2 spacing respectively as compared with stone column alone. This results shows that the spacing of the reinforcement is influencing the ultimate load of the stone column. The settlement of the soil has been decreased by providing the stone column and further decreased by providing the geogrid reinforcement. Novelty/Improvement: Lateral Reinforcement with geogrid discs increases the load carrying capacity of the soft soil and also it varies with varying the spacing of the reinforcement.

Keywords

Consolidation, Geogrids, Marine Clay, Pulverized, Perspex Tube, Reinforcement, Stone Columns, Stratagrid.
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  • Improvement of Soft Soil Performance using Stone Columns Improved with Circular Geogrid Discs

Abstract Views: 120  |  PDF Views: 0

Authors

S. Siva Gowri Prasad
Department of Civil Engineering, GMR Institute of Technology, Razam - 532127, Andhra Pradesh, India
P. V. V. Satyanarayana
Department of Civil Engineering, Andhra University, Visakhapatnam - 530003, Andhra Pradesh, India

Abstract


Objective: To study the load carrying capacity and settlement behavior of the soft soils improved with lateral reinforced stone columns. Methods/Analysis: In this study, the soft soil is reinforced with stone columns by providing lateral circular geogrid discs within the column. The tests were conducted on plain clay bed, plain stone column and stone column with geogrid by placing reinforcement at two different spacing i.e., at D and D/2 over full column length and investigated the effect of reinforcement to improve the properties of the clay bed. Findings: By improving the soft soil with stone column, the ultimate load of the soil has been increased by about 117% and is increased by 16% and 41% by placing the circular geogrid reinforcement at D spacing and D/2 spacing respectively as compared with stone column alone. This results shows that the spacing of the reinforcement is influencing the ultimate load of the stone column. The settlement of the soil has been decreased by providing the stone column and further decreased by providing the geogrid reinforcement. Novelty/Improvement: Lateral Reinforcement with geogrid discs increases the load carrying capacity of the soft soil and also it varies with varying the spacing of the reinforcement.

Keywords


Consolidation, Geogrids, Marine Clay, Pulverized, Perspex Tube, Reinforcement, Stone Columns, Stratagrid.



DOI: https://doi.org/10.17485/ijst%2F2016%2Fv9i30%2F130572