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Erschienen in: International Journal of Geosynthetics and Ground Engineering 5/2023

01.10.2023 | Original Paper

Evaluation of Soil–Geometrically Modified Geogrid Interaction in Direct Shear Mode

verfasst von: Mahmood Reza Abdi, Alireza Tabarsa, Parastou Haghgouy

Erschienen in: International Journal of Geosynthetics and Ground Engineering | Ausgabe 5/2023

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Abstract

Geogrids are widely used for soil reinforcement, justifying the necessity to comprehend their interaction with soil for safe and economic design of reinforced soil structures. As contribution of transverse rib resistance to soil–geogrid interaction in direct shear mode is very low, current research has been conducted to evaluate possible impact of modifying transverse member thickness (height) on interactions. Modified geogrids with three different transverse rib thicknesses perpendicular to load direction and different aperture sizes were generated by 3D printing technology and interactions at soil–geogrid interface investigated using large-scale direct shear apparatus. Poorly graded sand and normal pressures of 25, 50 and 75 kPa have been utilized in the investigation. Test results show maximum 22% improvement in overall shear strength at interface through greater transverse rib resistance mobilization using the modified geogrid with the thickest ribs (i.e. 6 mm). Enhancements showed to be directly related to the increase in rib thickness and inversely associated to aperture size. The highest and the lowest improvements in shear strengths at interface were correspondingly achieved by samples reinforced with 10 × 10 × 6 mm (length × width × rib thickness) and 40 × 40 × 2 mm geogrids.

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Metadaten
Titel
Evaluation of Soil–Geometrically Modified Geogrid Interaction in Direct Shear Mode
verfasst von
Mahmood Reza Abdi
Alireza Tabarsa
Parastou Haghgouy
Publikationsdatum
01.10.2023
Verlag
Springer International Publishing
Erschienen in
International Journal of Geosynthetics and Ground Engineering / Ausgabe 5/2023
Print ISSN: 2199-9260
Elektronische ISSN: 2199-9279
DOI
https://doi.org/10.1007/s40891-023-00479-2

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