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Geomechanics and Engineering Volume 2, Number 4, December 2010 , pages 281-302 DOI: https://doi.org/10.12989/gae.2010.2.4.281 |
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Response of rigid footing on reinforced granular fill over soft soil |
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K. Ramu and Madhira R. Madhav
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| Abstract | ||
| An extended model for the response of a rigid footing on a reinforced foundation bed on super soft soil is proposed by incorporating the rough membrane element into the granular bed. The super soft soil, the granular bed and the reinforcement are modeled as non-linear Winkler springs, non-linear Pasternak layer and rough membrane respectively. The hyperbolic stress-displacement response of the super soft soil and the hyperbolic shear stress-shear strain response of the granular fill are considered. The finite deformation theory is used since large settlements are expected to develop due to deformation of the super-soft soil. Parametric studies quantify the effect of each parameter on the stress-settlement response of the reinforced foundation bed, the settlement and tension profiles. | ||
| Key Words | ||
| geosynthetic reinforcement; finite deformation theory; granular bed; rigid footing; soft soil; hyperbolic response; settlement; tension. | ||
| Address | ||
| K. Ramu: Dept. of Civil Engineering, JNT University College of Engineering, Kakinada, India - 533 003 Madhira R. Madhav: JNT University, 159, Road No. 10, Banajara Hills, Hyderabad 500 034, India | ||