Abstract
ABSTRACT Rapid urbanization in India, particularly in Kolkata, has led to a scarcity of suitable land, necessitating effective ground improvement techniques. A case study was evaluated using 500mm diameter, 10m long plain cement concrete (PCC) piles installed at 2m c/c spacing to enhance subsoil for a high-rise residential structure. Initial Dilatometer (DMT) tests showed the subsoil was unsuitable for shallow foundations. Post-PCC piling, DMT tests revealed a 30-40% improvement in subsoil stiffness. The factor of Safety against liquefaction was calculated using DEEPSOIL software. Further analyses with DMT Settlement software and PLAXIS 2D confirmed that post-piling, the raft foundation settlement remained within permissible limits, proving the effectiveness of the ground improvement measures.
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