Abstract
AbstractReducing the total, differential settlement and increasing adequate bearing capacity are the two basic requirements for the construction of high-rise buildings, bridges, nuclear power reactors and offshore rigs on soft soil. They cover an immense area all along the coastal zones in India and other parts of the world. This coastline contains marine soft silt and cohesive soils and a higher level of the water table. These areas’ major structure foundations are built on a piled-raft foundation. Stone columns (SC) are very widely used for widespread loads, circular tanks, embankments and fills. The combination of piles with SCs may give an effective solution to resist the total and differential settlements. The performances of raft supported by the composite system of the pile—SCs are investigated using three-dimensional analyses. Effects of material properties of SCs, the tensile strength of geotextile, area replacement ratio and raft thickness have been examined. Results show that strengthening the soft clay soil with SCs and geosynthetic encased stone columns (GESC) were effective in enhancing the bearing capacity of the raft and reducing the total and differential settlement of the composite column supported raft foundation.KeywordsPile-raft foundationOSCGESCLoad-carrying capacityA tensile strength of encased material
Published Version
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