Evaluación de alternativas para mejorar el desempeño de columnas del paso elevado de la vía a Daule en el sector de “La Florida”.

Abstract

First, we travel to the study area to obtain data of the structure, like dimensions of beams, abutments, piles, etc. In addition, we acquire by tests the capacity of the concrete in the piles and their reinforcing rods. Of all the piers in the system, the one with the greatest height will be chosen to calculate the loads that it receives in order to begin the comparison. A comparative analysis of the bridge is made with the code on which its design was based (AASHTO 1996) and the current code in the country (AASHTO LRFD 2017). For the analysis, a first model is elaborated in SAP 2000 under the criteria of the old norm. From the mentioned model, data such as maximum loads, displacement, yield point, ultimate, etc. are extracted. After verifying that the designed structure satisfies with the criteria of the designed period, the analysis for the present code is developed by elaborating an additional model in SAP 2000. The changes in criteria between one code and another are considered and the previously cited data are extracted. Two alternatives are proposed for the rehabilitation of the structure because of damage to the piles due to the peeling of the cover, exposing the reinforcement of the elements. Costs per kg are estimated for each proposal.