Aplicación del ddbd (direct displacement base design) y comparación con el fbd (force basesd design) en estructuras regulares. (enfocado a evaluar geometría estructural): estructuras de muros acoplados de hormigón armado (de 5 a 20 pisos).

Abstract

This document is focused on the application and comparison of two seismic design methods that the Ecuadorian Construction Regulations – Seismic Hazard: Earthquake Resistant Design offers: Force-Based Design (FBD) and Direct Displacement-Based Design (DDBD), for coupled walls concrete structures between 5 and 20 stories. The analysis was carried out in three structures, one of six, twelve and eighteen stories, correspondingly, considering the constant soil type (rock) and a peak ground acceleration (PGA) of 0.4g, to analyze only the influence of the geometric configuration. Each structure was designed using both seismic design methods, starting from standard symmetric geometries. In the case of the FBD, the NEC15; and for DDBD, the Direct Displacement Based Seismic Design (DDBD) tools developed by Priestley et al. (2007). The parameters to compare these two methodologies will be based on the results of the basal shear, steel ratios, and max story drifts, in each of the proposed geometries.