Influência da ação do vento nas taxas de armadura de vigas de transição em edifícios de concreto armado

Abstract

Cities are increasingly tending to construct tall and slender buildings, which require more complex designs due to various demands. Wind action is one of these demands that significantly impacts structural design. Structural design must harmonize with architectural plans to address aesthetic requirements or interferences, often requiring the adoption of unconventional structures, such as transfer beams, where columns rest on beams. These beams demand special attention in design, and wind action can increase the forces acting on these elements. This study aims to analyze the influence of wind action on the longitudinal and transverse reinforcement ratios of transfer beams in reinforced concrete buildings of up to 30 floors. The buildings were designed using TQS software, modeling structures with 5, 10, 15, 20, 25, and 30 floors, with a transfer beam located on the first typical floor in all models. The results show that taller buildings require higher steel ratios in transfer beams and exhibit greater differences in reinforcement ratios with and without wind action, as well as requiring larger sections compared to common beams. Buildings with 25 and 30 floors showed the greatest differences in reinforcement ratios, with the 30-floor building showing a 0.54% difference in longitudinal reinforcement ratio, while the 5-floor building showed no difference.