Cortina atirantada: estudo de caso

• Autor(a) principal: Da Silva, Marcelo Euclydes
• Data de Publicação: 2020
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Universitário da Ânima (RUNA)
• Texto Completo: https://repositorio.animaeducacao.com.br/handle/ANIMA/15413
• topic: Estabilidade; Tirantes; Fator de Segurança

Anchored structures are those whose stability is guaranteed by tie rods anchored to the ground. The structure can be continuous, in a grid, in plates or in buttresses (NBR 11682: 2009). This work aimed to analyze containment structures with an anchoring system applied to engineering works that require cuts in urban regions. Therefore, the design method proposed by Morgenstern and Price was applied to the critical section of a project carried out in the city of Florianópolis, as a reference for analysis and comparison. The case studied is a building built in the central region of Florianópolis, SC, Brazil. This building is characterized by having 14 standard floors and 4 levels of garages, 3 of which are underground. To carry out the works underground, it was necessary to make a cut in the ground of approximately 7.10 meters. In order to make it possible to excavate the soil without causing structural interference in the adjacent buildings, it was necessary to implement a containment structure with a method of anchoring by ties. From the results obtained, it was possible to analyze the safety condition for the critical section evaluated in this study. The Geostudio 2018 R2 software, Slope / W module by the method of Morgenstern and Price, was used for this purpose. In the development of this case study, the failure to perform geotechnical tests culminated in the need to create additional analysis scenarios, seeking to simulate the design conditions proposed by the designer. For this, the cohesion soil parameter was zeroed, because when applied the calculated Safety Factor was above the minimum necessary for reinforcement in the soil.From these it was determined that only 2 lines of risers meet the safety criteria recommended by ABNT NBR 11682/2006 for this work located in the center of Florianópolis.