Diseño sismoresistente de edificaciones de acero aplicando diseño directo basado en desplazamientos (DDBD)

Abstract

DDBD has been developed over the last ten years to mitigate deficiencies in current Force Based Design. The fundamental difference between the Force Based Design and the DDBD is that it characterizes the single-degree freedom structure (SDOF) representing the performance of the maximum displacement response, rather than its initial elastic characteristics and the factors of Reduction of seismic response using force-based design. DDBD has been extensively studied for reinforced concrete structures; Knowing that there is currently a great demand in the construction of steel buildings, it is necessary in this research to apply the DDBD method for these buildings. On the other hand the metallic structures possess a great capacity resistant by the use of steel. This gives it the possibility of achieving large-scale solutions, such as covering large lights, large loads, etc. Within this research, regular and irregular steel pianos were designed, obtaining the seismic forces of the structures using the DDBD method and the Equivalent Lateral Force method described in ASCE 7-02 (American Society of Civil Engineers) Recommended by AISC 360, to be later designed using A1SC 360-05 (Specification for Structural Steel Buildings) for the design method based on LRFD (Loads and Factorial Resistors). Such structures are considered to be a high threat to a design spectrum in the IBC (International Building Code). Together, the performance of the structures designed by an inelastic analysis of history at the time was evaluated using SEISMOSTRUCT, ending with the analysis of the obtained results, establishing conclusions