Análise dos recalques diferenciais em um reservatório de água elevado localizado no CEASA-PE

Abstract

After inspections on a raised reservoir located in the Central Supply and Logistics of Pernambuco (CEASA-PE), structural pathologies were detected due to differential settlements, verified by topographic methods. The steps for the structural recovery of the superstructure were already in progress, requiring a solution for the stabilization of the settlements in order to prevent new pathologies or the collapse of the construction. This paper presents a case study of the problem cited, discussing the causes, effects and possible solutions, with the main focus on the analysis of settlement predictions and actual settlements, taking into account factors, economic, structural and usability. First a structural analysis of the first order was performed in order to estimate the load that each column is transmitting to the foundation, being separated between preliminary and through structural software. Knowing the acting loads, along with geological data from the terrain, calculations were made to determine the geotechnical load capacity in the foundation region using semi-empirical methods, and after that, analysis of settlement predictions using parameters obtained through back analysis, in order to compare the results to real settlement magnitudes measured by topographical methods. The present work has as its objective, the understanding about the methodology used at the analysis of settlements in elevated reservoirs, serving as study material to help the resolution of similar problems.