Load – Settlement Characteristics of Reinforced and Unreinforced Foundation Soil

In this paper, an effort has been made to study the improvement in load carrying capacity, settlement behavior and shear failure mechanism of a square and circular footing on a reinforced granular bed overlying weak soil. The effects of different shapes of isolated footing, the number of reinforcement layers and length of reinforcement are being studied. The foundation soil bed consists of horizontally laid reinforcements in 1, 2, 3, or 4 layers. From these studies it has been observed that 4-layers of geotextile of size 40cms x 40cms under circular footing shows better results when compared with square footing. In general, the inclusion of reinforcement in soil improved its bearing capacity by altering the type of failure. In foundation soil, the failure changed from local to general shear failure.

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