Renan Prandini

Zusammenfassung

The construction industry significantly contributes to global carbon emissions and resource depletion, necessitating a transition toward more sustainable materials. Renewable materials show high potential as an alternative to conventional fossil-based materials in mitigating climate change within the construction industry. Diversifying the sourcing, especially for plant-based materials, is imperative to ensure sustainability and prevent overreliance on specific resources. In prior studies, Coreless Filament Wound (CFW) natural fiber-reinforced polymer (NFRP) systems have demonstrated promising material efficiency and structural performance. However, the lack of research on their long-term performance in construction applications presents a significant barrier to widespread market adoption. This study addresses this gap by designing, developing, and evaluating the Hybrid Fibre Pavilion constructed for the 2024 Landesgartenschau in Wangen im Allgäu. The pavilion incorporates simply supported beams fabricated from robotically wound NFRPs and cross-laminated timber (CLT) slabs. Full-scale structural components were robotically manufactured and subjected to distributed ultimate load, creep, and cyclic load tests. The findings highlight the viability of this hybrid structural system, demonstrating its potential for robust instantaneous and long-term performance in construction.

Zusammenfassung

This paper revisits the determination of reciprocal structural arrangements for constructing tridimensional surfaces using exclusively straight members. It introduces a novelty geometric convergence method for finding reciprocal arrangements on doubly curved reference surfaces which include an adaptable length of members, demonstrating that existing methods — typically focused on generating reciprocal arrangements from predefined geometric rotations — represent only a subset of the broader design space for this typology. The proposed Adaptive Reciprocal Framing Tessellation method is applicable to both synclastic and anticlastic surfaces and allows for a strategic placement of support conditions of the anisotropic timber system, although some boundary conditions are needed to guarantee convergence of the structural arrangement. A structural performance evaluation of a set of generated patterns is given by assessing displacements and stress checks of members according to Eurocode 5 in an integrated computational engineering design workflow