Comparación del comportamiento sísmico de edificios con vigas banda y vigas descolgadas en pórticos especiales de hormigón armado - Caso 1

Abstract

Abstract: This paper analyzes the seismic behavior of buildings up to five stories high, constructed with special reinforced concrete frames, considering two structural configurations: drop beams and band beams. The case studies were designed according to the criteria of ACI 318-19 and the NEC, and evaluated using nonlinear static analysis to study the structural response to seismic loads. The methodology employed included obtaining sectional capacities from moment-curvature and moment-rotation diagrams using the CUMBIA code, applying pushover analysis, determining the performance point using the N2 method, and evaluating the damage level according to the VISION 2000 committee approach. The results indicate that both typologies achieve the life safety level; however, differences in their seismic response are observed. Structures with drop beams offer better displacement control and more efficient use of structural material, while structures with band beams achieve the required performance primarily through the stiffness provided by the columns.