Aplicación del ddbd (direct displacement based design) y comparación con el fbd (force based design) en estructuras regulares de muros en cantiléver (enfocado a evaluar la influencia de la amenaza) : estructuras de muros en cantiléver de 6 pisos.

Abstract

The aim of this curricular integration work is to compare the effects of the force-based design (FBD) and direct displacement-based design (DDBD) on a regular structural system under the loads generated by earthquakes. The FBD method presents uncertainties because it is assumed that all the structures of the same typology have the same level of ductility and the different factors that are used depending on the design regulations. The DDBD method, proposed by Priestley, Calvi and Kowalski (2007) was born due to the uneasiness of the FBD method therefore it tr ties to find to define a design displacement that in this case is limited to the Ecuadorian construction standards (NEC-15) to calculate the force generated by an earthquake. A building, which was built in the city of Quito was selected, it consists of six floors with a structural system of cantilever walls. The structure is built with 21MPa concrete and 420MPa reinforcing steel. The structure consists of eight walls of the same geometry. To compare the results obtained from the FBD method and the DDBD method, several structural designs of the same building were carried out on types of floor A, B, C and D. The geometry of cantilever walls varies according to the type of floor. The goal is to maintain consistency in the cross-section, header, longitudinal steel of the header, and confinement steel within it, facilitating a more precise comparison of displacement profiles, inelastic drifts, base shears, and quantities of steel for flexure and shear among the analyzed design methodologies.