Volume 18 Issue 5

S.No.	Article Title & Authors (Volume 18, Issue 5, October - 2025)	Page Nos.	Status
1.	Calibration of the Soil–Pile Interaction Model: An Approach Based on the Nonlinear Winkler Model Tatyanne Pacifico dos Santos and Aline da Silva Ramos Barboza International Journal of Advances in Engineering & Technology (IJAET), Volume 18 Issue 5, pp. 173-184, October 2025. ABSTRACT The design of deep foundations subjected to lateral loads is a key aspect in ensuring the safety and efficiency of structures such as tall buildings, transmission towers, and offshore installations. The nonlinear Winkler model (BNWF), which represents the soil through a series of nonlinear springs using the p–y curve approach, is widely applied in geotechnical practice due to its computational efficiency and simplicity. However, the calibration of p–y curves remain a challenge, as it relies on empirical parameters and often lacks experimental validation, particularly for tropical soils found in Brazil. This study presents a numerical calibration of the soil–pile interaction model based on three-dimensional finite element simulations of lateral load tests on piles embedded in cohesive soils, performed using the ABAQUS® software. The calibration was carried out by varying key soil parameters, including cohesion (c), elastic modulus (Es), and Poisson’s ratio (?s), along with the soil–pile interface friction coefficient (?). The results were compared with the semi-empirical p–y curves recommended by the American Petroleum Institute (API) for soft clays. As a practical contribution, the study provides representative parameter ranges for cohesive soils, suitable for application in design software based on the Winkler model. These findings aim to improve the accuracy of p–y curve applications in engineering practice and support more reliable structural analysis of pile foundations under lateral loads.	173-184	Online
2.	Deflection Analysis in Beams Reinforced with GFRP Davi Pitangui P. Abreu, Arthur Francisco Claro Ribeiro, Antonio P. Peruzzi, Rodrigo Gustavo Delalibera International Journal of Advances in Engineering & Technology (IJAET), Volume 18 Issue 5, pp. 185-201, October 2025. ABSTRACT Fiber-reinforced polymer composites utilizing glass fibers (GFRP) represent an established solution for concrete reinforcement, particularly in corrosive settings or applications requiring non-magnetic properties. Unlike conventional steel reinforcement, GFRP rebars are not subject to corrosion, which translate into an increased service life of structural members in harsh environments such as marine atmospheres, industrial plants or infrastructures influenced by de-icing salts. In the same study, a series of test program were done to quantify the mechanical properties of GFRP bars, in terms of effective-diameter, tensile strength and modulus of elasticity. Then three types of beams were compared and studied; one with a conventional deformed steel as strengthening method, the second one used FRP bars to serve as a “super-reinforced” beam and a third design was made for the optimized shapes in section geometry increasing the moment of inertia performance using GFRP bars for reinforcement. It was showed by the experimental and analytical results that beam with GFRP as a reinforcement has fulfilled satisfactory structural performance. Then, the optimal geometry as well as the super-reinforced beam attained comparable stiffness to that of the steel-reinforced reference beam. It is also apparent from the results that substitution of traditional reinforcement with GFRP can be technically feasible. On the other hand, if geometrical optimization of the structural member is possible, higher inerialicity may be safely considered as a cost-effective measure since it merges together structural adequacy and economy.	185-201	Online