Mistry, KaranKaranMistryPatel, SatyajitSatyajitPatelGandhi, S. R.S. R.Gandhi2025-11-072025-11-072025-01-01[9789819672844]10.1007/978-981-96-7285-1_172-s2.0-105020171923http://repository.iitgn.ac.in/handle/IITG2025/33455Deep soil mixing (DSM) is an in-situ soil mixing process using binders like cement, lime, and flyash in slurry or powder form to create a column-like structure to enhance soil strength with reduced permeability and compressibility. The DSM technique has advantages like quick construction, lower noise and vibrations, and environmental friendly implementation. This technique has variety of applications for temporary and permanent structures in soft clays, loose deposits, and organic soils for both onshore and offshore construction. Before DSM technique is applied in field, laboratory experimental trials are necessary to finalize the optimum binder dosage and water-binder ratio. However, it is not always economical/feasible to perform detailed experimental studies for DSM. The solution for such issues is using numerical analysis with software like PLAXIS 3D. Furthermore, such studies help in extrapolation of results for different cases that are not experimentally studied. In current study, numerical analysis using PLAXIS 3D has been performed for embankment (with and without surcharge load) supported on deep soil mixed column (DSMC) modified soft clay. The preliminary investigation using PLAXIS 3D modeling for boundary sensitivity, meshing, and plane strain conditions have been accomplished and parametric studies by varying DSMC diameter and length have been carried to compare the settlement and excess pore water pressure characteristics. The maximum settlement and pore water pressure values were noted to be significantly reduce, viz. settlement reduces from 0.561 m to 0.080 m and excess pore water pressure from 21.19 kPa to 6.03 kPa, respectively, for soil combinations with and without DSMC. It is opined that such studies would be useful in optimizing the DSM design for different infrastructure projects that require ground improvement.falseDeep soil mixing | Embankment | Ground improvement | Numerical analysis | Parametric studies | PLAXIS 3DConference Paper23662565219-23420250