Análise de estabilidade de contenção tipo terra armada, a partir de ângulo de atrito interno teórico e real

Abstract

The design of a reinforced earth was analyzed by means of the safety factors determination regarding the external and internal stability, besides the comparison of these, by means from theoretical and real internal friction angle. Grain size distribution, compaction and triaxial tests were performed. A theoretical internal friction angle of 34° was obtained based on the literature and material characterization and real of the 36° from the triaxial test. It was found that the safety factors calculated with the actual friction angle were 7% to 17% higher compared to those obtained with the theoretical data. It was verified that the design of the structure from the theoretical angle of friction was as expected, considering that it met the limits of safety factors and did not extrapolate them too much. However, it is suggested that more studies evaluate the geotechnical parameters of the materials in use, allowing the acquisition of more realistic structures.