Proposição de dimensionamento hidráulico de obra de arte especial: estudo de caso do trecho da travessia do rio Paciência com a MA-201

Abstract

The hydrological cycle is naturally balanced; however, disordered urbanization disrupts this balance, leading to impermeable soil and flooding events. The lack of integration between drainage management and urban planning is a recurring issue in Brazil. In São Luís, slow urbanization and real estate speculation have caused frequent flooding in the Paciência River Basin, affecting traffic, properties, and public health. Implementing effective urban planning and updating drainage systems are crucial to mitigating these impacts. The proposed case study, originating from the PIBIC/CNPq Program 2021/2022, aims to develop hydraulic sizing for a special structure crossing the Paciência River on the MA-201 highway in São Luís, MA. The goal is to address problems arising from urbanization and improve stormwater management. The study involved analyzing the physical characteristics of a sub-basin of the Paciência River through bibliographic research and local pluviometry analysis based on historical rainfall data provided by the National Water Agency (ANA) and the Geoenvironmental Nucleus of Maranhão (NUGEO) at the State University of Maranhão (UEMA). Field research was conducted with the aid of cartographic resources available on federal government websites, using QGIS software for map creation and AutoCAD for generating elevation profiles and floor plans. The hydraulic sizing of the structure was carried out according to relevant standards to ensure the project's adequacy and efficiency. The analysis determined that the ideal hydraulic sizing for the region is a bridge with a 30-meter span to ensure that flooding does not cause significant damage to the area