Design of Ground Improvement by Inclined DSM Columns for Railway Embankment (TÃœRKEY)-Video

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Video Summary

The study addressed excessive settlement and wall deformation in railway embankments over soft clay in Sivas, Turkey. Investigators proposed deep soil mixing (DSM) columns, installed at a 45-degree angle beneath the operating railway. Analyses predicted post-improvement settlements of 1.85 and 3.71 cm—below the 5 cm limit—and stability safety factors within required limits. Core tests showed average compressive strength of 11.24 MPa, exceeding expectations. Six months of monitoring after construction found no further settlement, supporting the DSM method as a satisfactory solution.

Keywords

deep soil mixing

railway embankment

soft clay stabilization

settlement control

wall deformation