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Eine Methodik zur Realisierung dünnwandiger Faltwerke aus zementbasierten Verbundwerk-stoffen durch Faltung
Textile-reinforced concrete allows the construction of extremely thin-walled and slim concrete structures. The reinforcement materials alkali-resistant glass or carbon have high characteristic strengths and are easily bendable. This opens up new ways of manufacturing lightweight structures by folding. Inspiration for the design and simulation of folding patterns can be found in Origami, whose use in engineering has enjoyed increasing popularity in recent years. On this basis, this paper presents a design and manufacturing method for efficient and material-specific load-bearing structures. If these structures are designed in such a way, that the plate and slab action is activitated within the load bearing mechanism, they are called folded plate structures. They are characterized by an efficient load transfer. The aim was to expand the variety of forms of concrete lightweight constructions while avoiding costly formwork. Concrete elements are made in a flat formwork and folded into a spatial structure. The methodology was named Oricrete in reference to Origami. The development and testing of the methods took place with the design and construction of several demonstrators. The design and implementation of the demonstrators is facilitated by the Oricreate simulation platform. The toolkit contributes to form finding, supports the modeling of the folding process and the design of folding devices. It also assists to analyse the load-bearing behaviour. Based on the so-called Yoshimura folding pattern, design parameters relevant to the design were identified and investigated. Several approaches were formulated for targeted form finding. Two approaches were developed to make concrete a foldable medium for the production of demonstrators. In the fold-and-grout approach, linear spacer elements were arranged above and below the centrally located cross-sectional reinforcement for creating folding lines before concreting. Various approaches were designed for folding the semi-finished plates. In the target form, the folding lines were fixed with mortar. A flexible formwork with a crease pattern was used for the fold-in-fresh pro-cess. Numerical and experimental methods were used to investigate the load-bearing capacity of the folded plate structures and to identify parameters influencing the load-bearing behaviour. Since the high compressive strength of the fine concrete was not fully exploited, methods for further increasing the load-bearing capacity were proposed and investigated. The application potential of the new structures is manifold. Beside the main function as a structural system they can be used, for example, as a lost formwork. They are also suitable as decorative or room-closing elements.
Eine Methodik zur Realisierung dünnwandiger Faltwerke aus zementbasierten Verbundwerk-stoffen durch Faltung
Textile-reinforced concrete allows the construction of extremely thin-walled and slim concrete structures. The reinforcement materials alkali-resistant glass or carbon have high characteristic strengths and are easily bendable. This opens up new ways of manufacturing lightweight structures by folding. Inspiration for the design and simulation of folding patterns can be found in Origami, whose use in engineering has enjoyed increasing popularity in recent years. On this basis, this paper presents a design and manufacturing method for efficient and material-specific load-bearing structures. If these structures are designed in such a way, that the plate and slab action is activitated within the load bearing mechanism, they are called folded plate structures. They are characterized by an efficient load transfer. The aim was to expand the variety of forms of concrete lightweight constructions while avoiding costly formwork. Concrete elements are made in a flat formwork and folded into a spatial structure. The methodology was named Oricrete in reference to Origami. The development and testing of the methods took place with the design and construction of several demonstrators. The design and implementation of the demonstrators is facilitated by the Oricreate simulation platform. The toolkit contributes to form finding, supports the modeling of the folding process and the design of folding devices. It also assists to analyse the load-bearing behaviour. Based on the so-called Yoshimura folding pattern, design parameters relevant to the design were identified and investigated. Several approaches were formulated for targeted form finding. Two approaches were developed to make concrete a foldable medium for the production of demonstrators. In the fold-and-grout approach, linear spacer elements were arranged above and below the centrally located cross-sectional reinforcement for creating folding lines before concreting. Various approaches were designed for folding the semi-finished plates. In the target form, the folding lines were fixed with mortar. A flexible formwork with a crease pattern was used for the fold-in-fresh pro-cess. Numerical and experimental methods were used to investigate the load-bearing capacity of the folded plate structures and to identify parameters influencing the load-bearing behaviour. Since the high compressive strength of the fine concrete was not fully exploited, methods for further increasing the load-bearing capacity were proposed and investigated. The application potential of the new structures is manifold. Beside the main function as a structural system they can be used, for example, as a lost formwork. They are also suitable as decorative or room-closing elements.
Eine Methodik zur Realisierung dünnwandiger Faltwerke aus zementbasierten Verbundwerk-stoffen durch Faltung
Woerd, Jan Dirk (Autor:in) / Hegger, Josef (Akademische:r Betreuer:in) / Weinand, Yves (Akademische:r Betreuer:in)
01.01.2018
1 Online-Ressource (VII, 189, xxiv Seiten) : Illustrationen pages
Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2018; Aachen 1 Online-Ressource (VII, 189, xxiv Seiten) : Illustrationen (2018). = Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2018
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