A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Adequacy of Stone Column Dimensions Supporting Isolated Footing When Subjected to Earthquake Loading
https://orcid.org/http://orcid.org/0000-0002-7374-3812
https://orcid.org/http://orcid.org/0000-0002-5893-1495
Stone columns are fundamental geotechnical units for improving soft soil deposits. It is a common application for supporting an isolated footing over stone columns when subjected to static loading. The same can also be used for earthquake loading. However, when the same element is subjected to an earthquake loading, the behaviour would not be the same. In such cases, the geometry requirement needs to be studied. The study can be done numerically using finite element analysis software PLAXIS 3D. In this study, the earthquake of magnitude 6.9 on the behaviour of the stone column was analysed. Parametric analyses were carried out to determine the adequacy of the stone column geom-etry for both OSC and ESC. The parameters studied are the area replacement ratio and the encasement stiffness. The results proposed the optimum values for the area replacement ratio as 40% and 35% for earthquake loading for OSC and ESC, respectively. The optimum encasement stiffness is proposed as 1000 kN/m for static loading and stiffness greater than 2000 kN/m for earthquake loading. In this paper, the procedure for the earthquake analysis using PLAXIS 3D is described to provide better clarity to the readers.
Adequacy of Stone Column Dimensions Supporting Isolated Footing When Subjected to Earthquake Loading
https://orcid.org/http://orcid.org/0000-0002-7374-3812
https://orcid.org/http://orcid.org/0000-0002-5893-1495
Stone columns are fundamental geotechnical units for improving soft soil deposits. It is a common application for supporting an isolated footing over stone columns when subjected to static loading. The same can also be used for earthquake loading. However, when the same element is subjected to an earthquake loading, the behaviour would not be the same. In such cases, the geometry requirement needs to be studied. The study can be done numerically using finite element analysis software PLAXIS 3D. In this study, the earthquake of magnitude 6.9 on the behaviour of the stone column was analysed. Parametric analyses were carried out to determine the adequacy of the stone column geom-etry for both OSC and ESC. The parameters studied are the area replacement ratio and the encasement stiffness. The results proposed the optimum values for the area replacement ratio as 40% and 35% for earthquake loading for OSC and ESC, respectively. The optimum encasement stiffness is proposed as 1000 kN/m for static loading and stiffness greater than 2000 kN/m for earthquake loading. In this paper, the procedure for the earthquake analysis using PLAXIS 3D is described to provide better clarity to the readers.
Adequacy of Stone Column Dimensions Supporting Isolated Footing When Subjected to Earthquake Loading
https://orcid.org/http://orcid.org/0000-0002-7374-3812
https://orcid.org/http://orcid.org/0000-0002-5893-1495
Stone columns are fundamental geotechnical units for improving soft soil deposits. It is a common application for supporting an isolated footing over stone columns when subjected to static loading. The same can also be used for earthquake loading. However, when the same element is subjected to an earthquake loading, the behaviour would not be the same. In such cases, the geometry requirement needs to be studied. The study can be done numerically using finite element analysis software PLAXIS 3D. In this study, the earthquake of magnitude 6.9 on the behaviour of the stone column was analysed. Parametric analyses were carried out to determine the adequacy of the stone column geom-etry for both OSC and ESC. The parameters studied are the area replacement ratio and the encasement stiffness. The results proposed the optimum values for the area replacement ratio as 40% and 35% for earthquake loading for OSC and ESC, respectively. The optimum encasement stiffness is proposed as 1000 kN/m for static loading and stiffness greater than 2000 kN/m for earthquake loading. In this paper, the procedure for the earthquake analysis using PLAXIS 3D is described to provide better clarity to the readers.
Adequacy of Stone Column Dimensions Supporting Isolated Footing When Subjected to Earthquake Loading
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Vanapalli, Sai K. (editor) / Solanki, Chandresh H. (editor) / Balan, K. (editor) / Pillai, Anitha G. (editor) / Rajan, Priyadharshini Maniam (author) / Krishnamurthy, Premalatha (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
Proceedings of the Indian Geotechnical Conference 2022 Volume 9 ; Chapter: 20 ; 227-239
2024-09-25
13 pages
Article/Chapter (Book)
Electronic Resource
English
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