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Structural design and testing of material optimized ribbed RC slabs with 3D printed formwork

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Structural design and testing of material optimized ribbed RC slabs with 3D printed formwork

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dc.contributor.author Huber, Tobias es_ES
dc.contributor.author Burger, Joris es_ES
dc.contributor.author Mata Falcon, Jaime es_ES
dc.contributor.author Kaufmann, Walter es_ES
dc.date.accessioned 2024-10-11T18:03:43Z
dc.date.available 2024-10-11T18:03:43Z
dc.date.issued 2023-04 es_ES
dc.identifier.issn 1464-4177 es_ES
dc.identifier.uri http://hdl.handle.net/10251/209939
dc.description.abstract [EN] Most of the concrete volume in multistorey buildings is cast in solid slabs, which are frequently flat slabs supported on columns. By using two-way spanning ribbed slabs, concrete consumption could be significantly reduced. However, due to the high costs associated with formwork, such a complex rib configuration is rarely used nowadays. With the advent of technologies for automated formwork fabrication, the material-saving potential inherent in this structural system could again be exploited. This paper investigates the feasibility of material-efficient ribbed concrete slabs on a building scale using conventional concrete and steel reinforcing bars cast inside a three-dimensionalprinted plastic-based formwork. To that end, the code-compliant design of ribbed slabs is first discussed, followed by the introduction of a concept for an automated design-to-production workflow. The sustainability of this slab system is compared to a solution using conventional formwork in a case study consisting of a multibay office building with slabs spanning 8 m in both directions, revealing that ribbed slabs use 40% less concrete than solid slabs. Several representative structural elements of the case study (ribs, slab-column transition) were produced at full-scale and tested until failure to investigate the feasibility of production and structural performance. Three T-beams with various rib shapes (straight, kinked with diaphragms, curved) were tested in a threepoint bending configuration, showing a ductile behavior with longitudinal reinforcement yielding and indicating the relevance of torsional effects in curved ribs. Punching tests on two slab-column connections (ribbed, solid) revealed that the optimized ribbed slab could prevent brittle punching failures and achieve an ultimate load 105% higher than the solid reference slab. All specimens' load-bearing behavior could be predicted using established design formulas, showing the feasibility of producing code-compliant ribbed slabs with the applied technology. es_ES
dc.description.sponsorship ETH Zürich Foundation; Geberit; Siemens; Swiss National Science Foundation's NCCR Digital Fabrication, Grant/Award Number: 51NF40-141853 es_ES
dc.language Inglés es_ES
dc.publisher John Wiley & Sons es_ES
dc.relation.ispartof Structural Concrete es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Automated formwork es_ES
dc.subject Digital fabrication es_ES
dc.subject Eggshell es_ES
dc.subject Optimization es_ES
dc.subject Prototype es_ES
dc.subject Punching es_ES
dc.subject Ribbed slabs es_ES
dc.subject Testing es_ES
dc.subject.classification MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS es_ES
dc.title Structural design and testing of material optimized ribbed RC slabs with 3D printed formwork es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1002/suco.202200633 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/SNSF//51NF40-141853/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos - Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports es_ES
dc.description.bibliographicCitation Huber, T.; Burger, J.; Mata Falcon, J.; Kaufmann, W. (2023). Structural design and testing of material optimized ribbed RC slabs with 3D printed formwork. Structural Concrete. 24(2):1932-1955. https://doi.org/10.1002/suco.202200633 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1002/suco.202200633 es_ES
dc.description.upvformatpinicio 1932 es_ES
dc.description.upvformatpfin 1955 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 24 es_ES
dc.description.issue 2 es_ES
dc.relation.pasarela S\521516 es_ES
dc.contributor.funder Swiss National Science Foundation es_ES
dc.contributor.funder Eidgenössische Technische Hochschule Zürich es_ES


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