Estudo de caso de estabilização de taludes em área urbana com estruturas mistas de solo grampeado e cortina atirantada

Abstract

In Brazil, earth retaining structures have been frequently used as a resource to improve urban areas utilization. The increase of urbanization and demographic index demands, as a side effect, the use of underground parking fields, tunnels, and new urban roads. To extend urban space and provide security against soil collapses, studies in geotechnical engineering are crucial and need to be constantly improved. Due to the diversity of geological contexts, careful and detailed analyses must choose the most appropriate earth retaining structure. In this sense, this work has studied and discussed two types of earth retaining systems that are the most applied by civil engineering in urban roads: soil-nailed and anchored walls. We review the literature regarding the two systems and the main calculation methods for slope stability analysis. Particularly, it was studied slope stability cases of two cut walls implemented in an avenue expansion project at Salvador city, state of Bahia. The analysis of the results indicated that the mixed use of soil-nailed and anchored wall for slope stability of a cut wall was the most coherent solution in terms of technical and economic feasibility.