Design Of Piers And Abutments Of A Bridge Applying The AASHTO Standard For The Conditions Of Ecuador

Abstract

The present study proposes a design proposal for bridge substructures specified in the American Association of State Highway and Transportation Officials (AASHTO) applied to the conditions of Ecuador, taking as reference specifications from Ecuadorian regulations and also, regulations from neighboring countries such as Peru. and Colombia and documents with relevant information from the Ministry of Transportation and Public Works of Ecuador associated with the subject of study, from which everything necessary was extracted regarding loads in general and particularizing in earthquake, wind and influence of rivers, establishing design criteria. for the adaptation of certain parameters such as earthquake and wind, which were used to generate a guide with the design procedure for reinforced concrete piers and abutments proposed for Ecuador. Subsequently, an example of the application of a reinforced concrete exchanger was carried out, where coupled with the design guide made, the considerations regarding loads, load combinations and the applicable limit states were established, performing the slip check. and overturning of the abutment and the design of its screen, as well as the design of the head and body of the pile, concluding that the AASHTO can adapt to the conditions of Ecuador with the modifications proposed in this work and that the value of the load of wind using the calculation methodology gives inferior results compared to the earthquake load, the earthquake being decisive in the design of the substructures.