http://memoria.ifrn.edu.br/handle/1044/2844 Thu, 23 Apr 2026 11:28:44 GMT 2026-04-23T11:28:44Z http://memoria.ifrn.edu.br/handle/1044/3208 Aplicação do método de Sulzberger no cálculo do dimensionamento geotécnico de fundações para postes duplo “T” de concreto armado The present study analyzes the applicability of the Sulzberger Method in the geotechnical design of foundations for reinforced concrete poles used in distribution networks and transmission lines. Two embedment conditions are evaluated: simple embedment filled with compacted soil-cement and embedment using a drilled shaft with a concrete base, considering both sandy and clayey soils. This method consists of analyzing the structural element primarily under lateral loads and is developed to present in detail the calculation procedures proposed by the model’s author. To demonstrate the practical and effective applicability of the method, design examples were carried out considering different types of poles, with varying load conditions and lengths. The results indicate that the studied methodology represents a viable alternative for design in situations where lateral loading—predominantly horizontal forces—is governing, as in the case of poles, contributing to increased structural safety and serving as a basis for further studies and related research. Wed, 28 Jan 2026 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/3208 2026-01-28T00:00:00Z http://memoria.ifrn.edu.br/handle/1044/3170 Análise dos editais de licitação para contratação de restauração de rodovias estaduais do Estado do Rio Grande do Norte Mon, 11 Aug 2025 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/3170 2025-08-11T00:00:00Z http://memoria.ifrn.edu.br/handle/1044/2986 Investigação da resistência de um solo de subleito localizado na praia de Zumbi (Rio do Fogo/RN) - Visando o dimensionamento de projetos de pavimentação The subgrade, the pavement foundation layer, plays a fundamental role in supporting traffic loads and is crucial to the durability and structural performance of the road. Taking this importance into account, the aim of this study was to investigate the subgrade resistance of a soil in the city of Rio do Fogo/RN, in the Praia de Zumbi district, aiming at its viability for application in paving projects. For this study, three soil samples were collected and subjected to physical characterization, compaction and California Support Index (CBR) tests, following the ABNT technical standards. The samples were classified according to the SUCS and TRB systems and were composed mainly of sand, also containing varying levels of silt and gravel. The results showed that Sample 1 presented the best geotechnical performance, with a CBR of 13.04%, being suitable for use as a subgrade. In turn, Samples 2 and 3 also met the necessary requirements according to the DNIT guidelines. None of the samples showed significant expansion. At the end of the work, it can be concluded that the soils of the region can be used in road works, as long as they are well compacted and, if necessary, stabilized. It is worth highlighting that this study contributes to the technical and sustainable development of the local infrastructure. Fri, 25 Jul 2025 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/2986 2025-07-25T00:00:00Z http://memoria.ifrn.edu.br/handle/1044/2977 Análise de tensões em solos utilizando o método de boussinesq com base nas cargas de pilares de uma obra na cidade de Natal The analysis of soil stresses is a fundamental step in geotechnical engineering, especially regarding the design of foundations. The behavior of the soil under loads applied by buildings and other civil structures directly influences the stability and safety of constructions, making it essential to understand how these stresses are distributed and dissipated with depth. In a context of growing urbanization and infrastructure development, assessing the stresses induced in the soil becomes essential to prevent settlements and other structural problems. This study aimed to evaluate, through the application of Boussinesq's equation, the distribution of stresses generated by point loads from the structural elements of a warehouse project belonging to the Companhia de Águas e Esgotos do Rio Grande do Norte (CAERN), considering a representative soil profile based on four SPT-type borehole tests. The analysis focused on the concentrated loads from the structural columns. The use of Boussinesq’s equation to analyze stress increases in the soil proved valid and technically appropriate, especially in the context of shallow foundations. The study made it possible to explore soil behavior under structural loads based on field parameters and fundamental concepts of soil mechanics. The results showed that, although Boussinesq’s equation has solid theoretical foundations and is widely used in geotechnical engineering, its consistency depends significantly on the application geometry, particularly the relationship between radius and depth. In the points where the load was applied directly over the columns, such as points B and D, the estimated values were consistent with theoretical behavior, demonstrating the model’s effectiveness. On the other hand, in more distant points, the results showed inconsistencies, highlighting the influence of the radius-todepth ratio on the reliability of the simulation. It is concluded that Boussinesq’s equation is an effective tool for estimating soil stresses, provided it is applied in scenarios involving relatively small radial distances. For applications with greater distances between the load and the analysis point, caution is recommended when interpreting the results. Fri, 25 Jul 2025 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/2977 2025-07-25T00:00:00Z