TY - JOUR
T1 - Robotic knitcrete
T2 - computational design and fabrication of a pedestrian bridge using robotic shotcrete on a 3D-Knitted formwork
AU - Rennen, Philipp
AU - Gantner, Stefan
AU - Dielemans, Gido
AU - Bleker, Lazlo
AU - Christidi, Nikoletta
AU - Dörrie, Robin
AU - Hojjat, Majid
AU - Mai, Inka
AU - Mawas, Karam
AU - Lowke, Dirk
AU - D’Acunto, Pierluigi
AU - Dörfler, Kathrin
AU - Hack, Norman
AU - Popescu, Mariana
N1 - Publisher Copyright:
Copyright © 2023 Rennen, Gantner, Dielemans, Bleker, Christidi, Dörrie, Hojjat, Mai, Mawas, Lowke, D’Acunto, Dörfler, Hack and Popescu.
PY - 2023
Y1 - 2023
N2 - The research project presented here aims to develop a design-informed manufacturing process for complex concrete shell structures in additive manufacturing and thus overcome limitations of traditional construction methods such as formwork- and labor intensity. To achieve this, an effort was made to merge the two technologies of CNC knitted stay-in-place formwork, known as KnitCrete, and robotically applied shotcrete, known as Shotcrete 3D Printing (SC3DP), and thereby reduce their respective limitations. The proposed workflow unites both digital fabrication methods into a seamless process that additionally integrates computational form finding, robotically applied fiber reinforcement, CNC post processing and geometric quality verification to ensure precision and efficiency. As part of a cross-university, research-based teaching format, this concept was implemented in the construction of a full-scale pedestrian bridge, which served as a demonstrator to evaluate the capabilities and limitations of the process. While overcoming some challenges during the process, the successful prove of concept shows a significant leap in digital fabrication of complex concrete geometry, reducing reliance on labor-intensive methods. The results shown in this paper make this fabrication approach a promising starting point for further developments in additive manufacturing in the construction sector.
AB - The research project presented here aims to develop a design-informed manufacturing process for complex concrete shell structures in additive manufacturing and thus overcome limitations of traditional construction methods such as formwork- and labor intensity. To achieve this, an effort was made to merge the two technologies of CNC knitted stay-in-place formwork, known as KnitCrete, and robotically applied shotcrete, known as Shotcrete 3D Printing (SC3DP), and thereby reduce their respective limitations. The proposed workflow unites both digital fabrication methods into a seamless process that additionally integrates computational form finding, robotically applied fiber reinforcement, CNC post processing and geometric quality verification to ensure precision and efficiency. As part of a cross-university, research-based teaching format, this concept was implemented in the construction of a full-scale pedestrian bridge, which served as a demonstrator to evaluate the capabilities and limitations of the process. While overcoming some challenges during the process, the successful prove of concept shows a significant leap in digital fabrication of complex concrete geometry, reducing reliance on labor-intensive methods. The results shown in this paper make this fabrication approach a promising starting point for further developments in additive manufacturing in the construction sector.
KW - additive manufacturing in construction
KW - digital fabrication
KW - flexible formwork
KW - green-state post-processing
KW - knitcrete
KW - robotic fiber winding
KW - shotcrete 3D printing
KW - stay-in-place formwork
UR - http://www.scopus.com/inward/record.url?scp=85180459567&partnerID=8YFLogxK
U2 - 10.3389/fbuil.2023.1269000
DO - 10.3389/fbuil.2023.1269000
M3 - Article
AN - SCOPUS:85180459567
SN - 2297-3362
VL - 9
JO - Frontiers in Built Environment
JF - Frontiers in Built Environment
M1 - 1269000
ER -