Evaluación del método de diseño directo basado en desplazamientos DDBD para pórticos con irregularridaees verticales

Abstract

he present research shows a new advance in the design philosophy for armed concrete pianos, called "Direct Design Based on Displacement" (DDBD), developed by Priestley and Kowalsky (2000). According to Dwairi (2004) the "DDBD" method has wide acceptability in the medium, and ensures that it will be enforced in future codes. The DDBD method was specially developed for the design of perfectly adjustable pianos and pianos. In the present investigation, it is applied in DDBD method to piano porticos with vertical irregularities, whose percentage of irregularity, is below and above the limit established by UBC (1997) for irregular authorities. The irregularities used in the evaluation process were: flexible floor, mass irregularity and irregularity in the vertical geometry, taken from the code UBC (1997)