Estudo de caso: sistema estrutural de concreto protendido em empreendimento de alto padrão na paraíba

Abstract

Faced with increasingly rigorous demands for quality, safety, and efficiency in construction, the pursuit of innovation and diverse methods has become essential. This work presents a case study of a high-standard project in João Pessoa, Paraíba, analyzing the use of the ribbed slab construction method with prestressed concrete—a technique primarily adopted to meet the requirements for large spans and high loads, ensuring improved structural performance. A sequential process for implementing this construction system is demonstrated, detailing all construction stages of the case under study, including formwork assembly, concrete pouring, steel reinforcement installation, the use of greased strands, shoring, and the prestressing application process. Estimated costs and execution data are also presented, totaling approximately R$42 million for the 47-story structure, reflecting the additional investment of this method compared to conventional techniques, yet offering efficient solutions tailored to the project's specific requirements. With this, the results were evaluated and discussed to analyze the advantages and disadvantages presented by the application of prestressed concrete in the building under study, additionally, the analysis highlights the reasons for choosing this method for the building under study.