Review of the Behavior of Geogrid-Reinforced Sand Soil Supported a Shallow Footing under Different Loadings

The soil can be subjected to different static loads, i.e., centric, eccentric, and inclined, and dynamic loads, i.e., repeated and seismic. Under such loads, the soil can suffer from deterioration of the soil bearing capacity, extensive deformation, and rotation. Soil reinforcement is a technique that enhances the soil response by acting as a tensile member, thereby increasing soil shear strength and improving soil performance, which in turn prevents foundation failure. Geosynthetic materials are the widely utilized reinforcing elements that include geotextile, geocell, and geogrid. Geogrid is a geosynthetic member consisting of ribs and apertures to allow interlocking with the soil. The present paper overviews the use of geogrid as a reinforcing element in sand soil supporting shallow foundations, particularly under various types of loads, including static, dynamic, and seismic. The research introduces soil-foundation reinforcement, geogrid reinforcement, and the parameters influencing the geogrid reinforcement. It also discusses the mechanism of reinforcement and the failure associated with reinforcing the soil supporting shallow footings. Furthermore, the study examines both static and dynamic loads, encompassing both experimental and numerical research. The expository data analysis is applied in the present study to analyze the available studies. The results showed that geogrid is effective in enhancing the soil performance when subjected to the different static and dynamic loads when installed with the optimum parameters. The parameters that influence the geogrid response are the depth of the first geogrid layer (u/B), the depth, width, and the number of geogrid layers (h/B), (b/B), and N, which are 0.2-0.5, 0.2-0.3, 3 to 4, and 3, respectively.