Estudo analítico da resistência de interface entre tiras sintéticas e diferentes tipos de solo

Abstract

The growing demand for more sustainable geotechnical solutions has driven the use of geosynthetics in retaining structures. In this context, this work presents an analytical study of the interaction between synthetic strips and different types of soils used in mechanically stabilized soil walls. The objective was to evaluate the geotechnical behavior of different types of soil in contact with synthetic strips, thus allowing the prediction of behavior based on the properties of the soil and the reinforcement used. The methodology adopted involved the review of experimental data available in the literature, with emphasis on the thesis of Pierozan (2018), the development of analytical formulations to obtain specific coefficients adjusted to these data, and the elaboration of analytical tools capable of predicting, with greater precision, the values of interest. Properties such as particle size distribution, Atterberg limits, specific surface area of solid particles, and apparent dry specific mass were considered. The analyses revealed a high correlation between the analytical values and those obtained by the Matlab software, with high coefficients of determination (R²), demonstrating the efficiency of the proposed equations. The approach allows for predicting the maximum pull-out load for different interactions between soil and synthetic strip (conventional and high-adhesion), contributing to a more agile, technical, and sustainable design of retaining structures in civil engineering. It is concluded that the analytical formulations developed proved efficient and reliable for estimating the maximum pull-out load, presenting results consistent with experimental data. Therefore, the study contributes to optimizing the design process of reinforced soil retaining structures, reducing costs and analysis time, and encouraging the use of sustainable and technically sound methods in geotechnical engineering.