Abstract
A novel method is introduced in the present research by punching a series of openings into the geotextile (called grid-geotextile) to produce an interlocking mechanism as occurred in geogrid reinforcements. A series of pull-out laboratory model tests were performed in three different gradations of sand beds using polypropylene geotextile reinforcement and grid-geotextile reinforcement consisting of different sizes of aperture of 10 mm × 10 mm, 20 mm × 20 mm, and 30 mm × 30 mm, each having a rib size of 15 mm. Interestingly, based on the type of sand, the test results revealed that the grid-geotextile reinforcements of 20 mm × 20 mm improve the anchor uplift capacity 1.15 to 1.25 times as compared to the geotextile reinforcement, even though the amount of reinforcement and tensile stiffness are 1.32 times and 7.76 times lesser as compared to geotextile reinforcement material. Moreover, the present study highlights the influence of reinforcement geometrical parameters on anchor uplift capacity as compared to reinforcement tensile stiffness and accentuates the optimum ranges of influence parameters to the acquisition of maximum reinforcement benefits. Consequently, simple correlations were developed and presented along with the limits for finding the uplift capacity of geogrid reinforced sand beds with the influencing factors.
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Abbreviations
- A :
-
Aperture size of the grid-geotextile reinforcement layer (mm)
- B g :
-
Width of the reinforcement layer (mm)
- C c :
-
Soil particle’s curvature coefficient (dimensionless)
- C u :
-
Soil particle's uniformity coefficient (dimensionless)
- CMD :
-
Cross machine direction
- D :
-
Diameter of the anchor plate (mm)
- D 50 :
-
Medium soil particle size (mm)
- d min :
-
Minimum dimension of apertures (mm)
- EA :
-
Secant modulus of reinforcement material (kN/m)
- h :
-
Vertical spacing of the reinforcement layers (mm)
- L :
-
Depth of anchor plate (mm)
- MD :
-
Machine direction
- N :
-
Number of reinforcement layers
- Q u :
-
Unreinforced sand ultimate pull-out capacity (kPa)
- R :
-
Rib size of grid-geotextile reinforcement layer (mm)
- R d :
-
Relative density of sand (%)
- TF:
-
Techno Fabric
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Venkatesh Buragadda and Eswara Reddy Orekanti conceptualized, designed, and carried out the experiments, analyzed the results, and contributed to writing the original draft preparation. Vinod Yadav Garu and Pavan Kalyani Edagotti contributed to carrying out the experiments and analyzing the results and contributed to writing, reviewing, and editing.
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Buragadda, V., Orekanti, E.R., Garu, V.Y. et al. Influence of Reinforcement Geometrical Parameters on Plate Anchor Uplift Capacity. Transp. Infrastruct. Geotech. (2023). https://doi.org/10.1007/s40515-023-00351-w
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DOI: https://doi.org/10.1007/s40515-023-00351-w