Análise de estabilidade de talude: estudo de caso do rodoanel de Teresina

Abstract

The urban growth of cities presents various challenges, including overcoming natural obstacles. Often, the most technically and financially viable option is to execute cuts or embankments, which result in slopes. These structures, which can reach significant heights and lengths, require constant monitoring and maintenance to prevent temporal effects and pathological manifestations that could compromise their stability. This study aims to assess the condition and stability of the slopes along the Teresina–PI ring road. As part of this analysis, the existing slopes along the ring road were cataloged, along with the pathological manifestations they exhibit, to identify the most critical slope. After defining the object of study, the work proceeded with a topographic survey of the slope and characterization of its materials. The study concluded with the modeling, using Geoslope software, of three slope profiles to determine their most critical factor of safety. This search revealed critical safety factors ranging from 1.27 to 1.34, which are below the recommended value in NBR 11682, which addresses slope stability and recommends safety factors above 1.5 as safe for infrastructure. The result indicates the need for interventions by the responsible authorities to enhance the slope’s stability and its safety factor. This solution is achievable through soil stabilization works and aims to ensure the protection of road users and nearby residents.