Diagnóstico y propuesta de reforzamiento del sistema de muros voladizo de altura variable con curvatura en planta, Terraplén 2:1 en la prolongación de la vía Yasuní, cantón Rumiñahui, provincia de Pichincha

Abstract

The purpose of this technical project is to determine an adequate and duly founded reinforcement alternative for a system of retaining walls that support an embankment on which the road extension of Río Yasuní street is located, in the Rumiñahui canton, Pichincha province, on a structural calculation basis for the retaining walls based on the design regulations: AAHSTO LRFD and ACI 318-19, with which it seeks to contrast and assume a conservative position in terms of design, proposing alternatives for reinforcement with carbon fibers (FRP) and the addiction of counterforts. It is necessary to emphasize that this project was born to solve the uncertainty of the structural behavior of the structure based on the evidence that there has been an incorrect interpretation of the structural plans regarding the steel placed in walls one, two and three of said set. This construction error generates sufficient motivation to reconsider the calculation of the stability of the embankment and the built walls, based on the existing information from geotechnical and material tests, kindly granted by the staff of the GAD of the Rumiñahui canton. To carry out this objective, it was decided to rely on the structural analysis from the programs: SAP 2000, to facilitate and corroborate through the manual calculation of the wall and MIDAS GTS in the evaluation of the slope stability. Given the dimensions of the project, each wall of the set was analyzed individually in search of the expected problems, the calculation was simplified by grouping the set of walls into three types, to then establish the design of the reinforcements and the technical-economic analysis of them to establish conclusions that allow weighing the benefits and disadvantages of one with the other type of reinforcement.