ESTUDO COMPARATIVO DE MUROS DE ARRIMO EXECUTADOS EM CONCRETO ARMADO, QUANDO DIMENSIONADOS PARA ALTURAS DIFERENTES

Abstract

This work has the objective to make a comparison between the designs of retaining walls, designed in reinforced concrete, two different types, considering variation in height. The types of walls will be in classic profile and buttresses. The idea came from the need to understand, through consumption indicators and limit state checks, why some authors recommend the use of retaining walls models for pre-established ranges of heights and claim impracticability of the structure when these heights are outdated. The work is divided into two distinct phases. In the first phase, they are made theoretical surveys, based on technical literature on retainers, retaining walls and soil characteristics. This theoretical approach begins with a characterization of the properties of the soil necessary for the design, and proceeds showing some types of retaining walls. Following is a study done on existing shipments and some theories developed over the years by different authors. In addition, there is a legal survey, which is necessary for the fulfillment of the sizing steps. In the initial stage, it is also presented, the subject drainage, sizing calculation scripts and guidelines for the study of proposed case. Since the goal is to make the comparison by consumption indicators and checks, the design of structures is necessary. This comprises dimensioning the second step and starts the pre-sizing of the structures based on the initially consulted bibliography. Following are made of stability checks and dimensioning of armor as the ultimate limit state. This work also includes, for the status check service limits the use of the F-Tool software with soil-structure interaction models. For the analysis of results, charts and graphs are presented, who is which aid in the understanding of values, as the indicative consumption. Finally, after a discussion of the main points observed in the design and comparison, it is clear the impracticability of the wall in classic profile with high altitude and as a possible solution using the second model proposed.