Propuesta de adaptación de criterios de diseño para subestructuras de puentes descritos en la norma AASHTO LRFD 2014 a las condiciones específicas de Ecuador

Abstract

The present study poses an adaptation proposal of design principles of bridges substructures specified on AASHTO LRFD 2014 (American Association of State Highway and Transportation Officials) to Ecuadorian conditions. It was taken as reference, specifications of the local normative as NEC-15 (Construction Ecuadorian Norm) and NEVI-12 (Vial Ecuadorian Norm), furthermore documents with relevant information associated with this topic, of which all the referent information about seism, wind load, and river influence was extracted; and it was established criteria for the adaptation of certain parameters that were used to generate a guide, which has the design procedure of piers and reinforced concrete abutments proposed to Ecuador. After that, it was passed to the realization of application exercises, which, coupling with the design guide, it was established all the considerations about loads, load combinations and the applicable limit states for the design of abutments and reinforced concrete piers for not only a bridge of exchanger of two spans but also a bridge of three spans above a river. Finally, the most important considerations written along the whole study were extracted to pose conclusions and recommendations. The results gotten in the study were synthesized.