Exploração do espaço de soluções de projeto das fôrmas de estruturas em concreto armado com vistas à redução de resíduos

Abstract

The construction industry consumes a large volume of natural resources and generates significant waste, particularly through the use of timber formwork in cast-inplace concrete structures. Given the lack of tools to estimate construction waste, this study proposes a data-driven design process capable of mapping the performance of timber formwork through the exploration of the solution space of an optimization system. A parametric model of timber formwork for cast-in-place reinforced concrete structures was developed. The model allows the manipulation of structural dimensions and formwork parameters, identifies efficient solutions, and quantifies timber consumption as well as waste generated by the incompatibility between commercial dimensions and the geometric requirements of the components. The results indicate that the method is capable of identifying structurally efficient alternatives with a lower formwork-to-built-area ratio. It was identified that up to the 10th floor, the building presents favorable concrete consumption rates and satisfactory performance in terms of formwork usage. Similarly, spans of approximately 7 m stand out for their efficiency in concrete consumption and also demonstrate good performance in the formwork analysis, confirming their suitability as a balanced design solution. It is concluded that the integration of a parametric model with data-driven analysis provides robust support for the design process, contributing to more efficient and environmentally responsible decision-making in the use of timber formwork.