Various soil improvement methods such as soil reinforcement technique have been used as a solution for improving the soil mechanical features in geotechnical engineering applications like the construction of building foundation and roadbed. In recent years, numerous scientific studies have been evaluating the performance of foundations resting on the soil reinforced by various types of reinforcing materials. Soil reinforcement can consist of a wide range of materials such as polymeric geosynthetics. Geosynthetics have been used in various forms especially in two-dimensional (2D) planar form (geogrid, geotextile, and geonet) or the three-dimensional (3D) form (geocell). They are also used as long fabric or the continuous insert form (sheets, layers, strips), and as randomly oriented discrete inclusions (short cut fibers). Many studies have discussed the modification and improvement of soil synthetic reinforcement properties and its shape. Some of these studies have laid foundation for the development of new polymeric soil reinforcements. A braid is a textile structure produced by intertwining of two or more strands or fabric strips in a bias and diagonal formation. Yarn systems move in separate controlled sinusoidal or circular paths in the braiding technique. Braiding technology offers a reduced fabrication time at a relatively low cost for producing low-cost, high-volume continuous fiber composites. There is a possibility to produce a wide range of these technical textiles with different cross-section shapes, sizes, materials, and patterns. Today, braided structures are widely used in various industries, though not as a soil reinforcing fabric. The main objectives of this research were to investigate the interaction between buried tubular braid elements and sand and to evaluate the effects of these structures in the sand foundation bed, as well as comparison of the braid performance with that of the common planar reinforcements; these were all done for the first time. For this purpose, three series of interaction element tests including direct shear tests, pull-out tests, and soil stress control tests were conducted on the unreinforced and reinforced sand composites. The stress control tests are also innovative experiments designed due to the specific shape of the braid elements. The overall performance of the reinforced foundation bed with the planar and tubular reinforcing textile was evaluated through a series of standard plate load tests. Finally, numerical modeling technique was used to evaluate the performance and interaction of tubular braid elements inside the soil bed. According to the results, the performance and the enhancement effect of the tubular braid structures or tubular reinforcement in all tests, except the case of pull-out mechanism, were found to be better than that of the similar typical planar reinforcement. The results suggested that tubular braid resulted in the enhanced sand shear strength (especially the apparent cohesion of the reinforced soil composites), mobilization of the excess compressive stress in the enclosed soil inside the tubular braids (due to the soil confinement ability of the tubular braids), and reduction in the vertical stress level of the footing model transferred down through the soil bed (or increase of the pressure distribution angle). It was also found that the tubular braid elements inside a reinforced foundation bed resulted in more increase of the average bearing capacity, more increase of the stiffness of the footing bed, and more reduction in the footing settlement, in comparison to the similar planar reinforcement layers. Therefore, for the same amount of the reinforcement used, the tubular shape offered a much better overall performance, as compared to the 2D planar form.