Análise de solos por meio de sondagem SPT - Estudo de caso na cidade de Macapá-AP

Abstract

This study analyzes 62 SPT (Standard Penetration Test) reports conducted in 20 neighborhoods of Macapá, Amapá, aiming to identify the predominant soil types, evaluate their resistance, and understand their implications for foundation design. The methodology involved collecting stratigraphic profiles, NSPT values, and groundwater levels. Empirical formulas widely used in geotechnical engineering, such as those proposed by Terzaghi & Peck, Meyerhof, and Décourt & Quaresma, were applied to estimate the allowable bearing capacity. The results show high geotechnical variability, with soft and organic soils in lowland and floodprone areas, and more resistant soils in higher regions. Neighborhoods such as Nova Esperança, Açaí, and Beirol present low-resistance soils requiring deep foundations, while areas like Infraero, Santa Inês, and São Lázaro have soils suitable for shallow foundations. The study reinforces the importance of localized geotechnical investigations and the adoption of design criteria adjusted to the subsoil conditions of Macapá.