Diseño directo basado en desplazamientos para puentes convencionales

Abstract

The current practice of seismic resistant bridge design in Ecuador and the world is mostly based on the use of force-based methods. With these methods, a ductile design is achieved when the structure is given a resistance equal to or greater than that required to balance the seismic demand. In this paper the Direct Design Method based on Displacement is presented as a rational and practical alternative for the seismic resistant design of structures. The main objective of this research is to develop DDBD and work on its implementation, so that it can be effectively used for the design of bridges. The specific objectives of this research are: (1) Define a general procedure for the DDBD of bridges, (2) Establish the applicability of DDBD. The bridges considered have the following singularities: integral and flexible stirrups, symmetrical and asymmetrical configuration. The performance of each of the structures that result from applying the design method is verified by the non-linear analysis of history in time. In this paper, a review of the existing literature that supports this method is presented and the results of a study in which 38 bridges are designed using the Direct Design Based on Displacement (DDBD)