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Characteristic of Ring Footing Fixed with Geogrid Strip Resting on Sand Using Numerical Technique
https://orcid.org/http://orcid.org/0000-0001-8801-2572
https://orcid.org/http://orcid.org/0000-0003-1771-1426
Ring footing is often adopted for large and vertical cantilever tall structures to resist vertical load along with overturning moment. It is used to support axisymmetric structures such as Chimney, Elevated rotary, Silos, Overhead water tank. In this study, finite element method has been applied using ANSYS for three-dimensional modelling of the problem to analyse the ring foundation fixed laterally with geogrid strip resting on sand bed and concentric vertically loaded on its central radius. Load settlement behaviour and stability against overturning of ring foundation fixed with geogrid strip at 60° and 90° have been studied. In addition, analysis has been carried out for outer diameter 200 mm, 300 mm, and 400 mm of the model and for different ring radii ratio (n), whilst varying concentric vertical load as well as the overturning moment at foundation level. Maximum deflections have been determined for each case, and the results have been verified with the results existing in the literature. Settlement of ring footing fixed with geogrid strip is significantly lower, thus reducing the annular area requirement for the same settlement at constant ring radii ratio (n) in comparison with the ring footing without geogrid. Moreover, analysis reflects that the optimum value of ring radii ratio (n) lies between 0.35 and 0.4, where the settlement is minimum and bearing capacity is maximum. Under overturning moment, stability of the ring foundation fixed with geogrid strips exhibited higher resistance in comparison with the ring foundation without geogrid strip.
Characteristic of Ring Footing Fixed with Geogrid Strip Resting on Sand Using Numerical Technique
https://orcid.org/http://orcid.org/0000-0001-8801-2572
https://orcid.org/http://orcid.org/0000-0003-1771-1426
Ring footing is often adopted for large and vertical cantilever tall structures to resist vertical load along with overturning moment. It is used to support axisymmetric structures such as Chimney, Elevated rotary, Silos, Overhead water tank. In this study, finite element method has been applied using ANSYS for three-dimensional modelling of the problem to analyse the ring foundation fixed laterally with geogrid strip resting on sand bed and concentric vertically loaded on its central radius. Load settlement behaviour and stability against overturning of ring foundation fixed with geogrid strip at 60° and 90° have been studied. In addition, analysis has been carried out for outer diameter 200 mm, 300 mm, and 400 mm of the model and for different ring radii ratio (n), whilst varying concentric vertical load as well as the overturning moment at foundation level. Maximum deflections have been determined for each case, and the results have been verified with the results existing in the literature. Settlement of ring footing fixed with geogrid strip is significantly lower, thus reducing the annular area requirement for the same settlement at constant ring radii ratio (n) in comparison with the ring footing without geogrid. Moreover, analysis reflects that the optimum value of ring radii ratio (n) lies between 0.35 and 0.4, where the settlement is minimum and bearing capacity is maximum. Under overturning moment, stability of the ring foundation fixed with geogrid strips exhibited higher resistance in comparison with the ring foundation without geogrid strip.
Characteristic of Ring Footing Fixed with Geogrid Strip Resting on Sand Using Numerical Technique
https://orcid.org/http://orcid.org/0000-0001-8801-2572
https://orcid.org/http://orcid.org/0000-0003-1771-1426
Ring footing is often adopted for large and vertical cantilever tall structures to resist vertical load along with overturning moment. It is used to support axisymmetric structures such as Chimney, Elevated rotary, Silos, Overhead water tank. In this study, finite element method has been applied using ANSYS for three-dimensional modelling of the problem to analyse the ring foundation fixed laterally with geogrid strip resting on sand bed and concentric vertically loaded on its central radius. Load settlement behaviour and stability against overturning of ring foundation fixed with geogrid strip at 60° and 90° have been studied. In addition, analysis has been carried out for outer diameter 200 mm, 300 mm, and 400 mm of the model and for different ring radii ratio (n), whilst varying concentric vertical load as well as the overturning moment at foundation level. Maximum deflections have been determined for each case, and the results have been verified with the results existing in the literature. Settlement of ring footing fixed with geogrid strip is significantly lower, thus reducing the annular area requirement for the same settlement at constant ring radii ratio (n) in comparison with the ring footing without geogrid. Moreover, analysis reflects that the optimum value of ring radii ratio (n) lies between 0.35 and 0.4, where the settlement is minimum and bearing capacity is maximum. Under overturning moment, stability of the ring foundation fixed with geogrid strips exhibited higher resistance in comparison with the ring foundation without geogrid strip.
Characteristic of Ring Footing Fixed with Geogrid Strip Resting on Sand Using Numerical Technique
Indian Geotech J
Swarnkar, Dipendra C. (author) / Singh, A. K. (author)
Indian Geotechnical Journal ; 55 ; 145-160
2025-02-01
16 pages
Article (Journal)
Electronic Resource
English
Characteristic of Ring Footing Fixed with Geogrid Strip Resting on Sand Using Numerical Technique
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