Experimental and numerical analyses of circular footing on geogrid-reinforced granular fill underlain by soft clay

Experimental and numerical investigations into the bearing capacity of circular footing on geogrid-reinforced compacted granular fill layer overlying on natural clay deposit have been conducted in this study. A total of 8 field tests were carried out using circular model rigid footing with a diamete...

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Bibliographic Details
Published in:Acta geotechnica 2014-08, Vol.9 (4), p.711-723
Main Authors: Demir, Ahmet, Yildiz, Abdulazim, Laman, Mustafa, Ornek, Murat
Format: Article
Language:English
Subjects:
Bearing capacity
Circularity
Clay
Clay (material)
Complex Fluids and Microfluidics
Computer simulation
Engineering
Field tests
Finite element analysis
Foundations
Geoengineering
Geography
Geotechnical Engineering & Applied Earth Sciences
Hydraulics
Mathematical models
Numerical analysis
Reinforcement
Research Paper
Soft and Granular Matter
Soil Science & Conservation
Solid Mechanics
Three dimensional
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Summary:Experimental and numerical investigations into the bearing capacity of circular footing on geogrid-reinforced compacted granular fill layer overlying on natural clay deposit have been conducted in this study. A total of 8 field tests were carried out using circular model rigid footing with a diameter of 0.30 m. 3D numerical analyses were performed to simulate soil behavior using finite element program Plaxis 3D Foundation. The results from the FE analysis are in very good agreement with the experimental observations. It is shown that the degree of improvement depends on thickness of granular fill layer and properties and configuration of geogrid layers. Parameters of the experimental and numerical analyses include depth of first reinforcement, vertical spacing of reinforcement layers. The results indicate that the use of geogrid-reinforced granular fill layers over natural clay soils has considerable effects on the bearing capacity and significantly reduces the lateral displacement and vertical displacement of the footing.
ISSN:1861-1125
1861-1133
DOI:10.1007/s11440-013-0207-x