Unsymmetrical Fibre-Reinforced Plastics for the Production of Curved Textile Reinforced Concrete Elements
Affiliation(s)
Institute of Lightweight Structures, Technische Universit?t Chemnitz, Chemnitz, Germany .
Institute of Lightweight Structures, Technische Universit?t Chemnitz, Chemnitz, Germany .
ABSTRACT
A new constructive and technological approach was developed for the efficient production of large-dimensioned, curved freeform formworks, which allow the manufacturing of single and double-curved textile reinforced concrete elements. The approach is based on a flexible, multi-layered formwork system, which consists of glass-fibre reinforced plastic (GFRP). Using the unusual structural behavior caused by anisotropy, these GFRP formwork elements permit a specific adjustment of defined curvature. The system design of the developed GFRP formwork and the concrete-lightweight-elements with stabilized spacer fabric was examined exhaustively. Prototypical curved freeform surfaces with different curvature radii were designed, numerically computed and produced. Furthermore, the fabric’s contour accuracy of the fabric was verified, and its integration was adjusted to loads.
A new constructive and technological approach was developed for the efficient production of large-dimensioned, curved freeform formworks, which allow the manufacturing of single and double-curved textile reinforced concrete elements. The approach is based on a flexible, multi-layered formwork system, which consists of glass-fibre reinforced plastic (GFRP). Using the unusual structural behavior caused by anisotropy, these GFRP formwork elements permit a specific adjustment of defined curvature. The system design of the developed GFRP formwork and the concrete-lightweight-elements with stabilized spacer fabric was examined exhaustively. Prototypical curved freeform surfaces with different curvature radii were designed, numerically computed and produced. Furthermore, the fabric’s contour accuracy of the fabric was verified, and its integration was adjusted to loads.
KEYWORDS
Anisotropic Formworks, Textile-Reinforced Concrete, Fibre-Reinforced Plastics, Curved Concrete
Anisotropic Formworks, Textile-Reinforced Concrete, Fibre-Reinforced Plastics, Curved Concrete
Cite this paper
Funke, H. , Gelbrich, S. , Ehrlich, A. , Ulke-Winter, L. and Kroll, L. (2014) Unsymmetrical Fibre-Reinforced Plastics for the Production of Curved Textile Reinforced Concrete Elements. Open Journal of Composite Materials, 4, 191-200. doi: 10.4236/ojcm.2014.44021.
Funke, H. , Gelbrich, S. , Ehrlich, A. , Ulke-Winter, L. and Kroll, L. (2014) Unsymmetrical Fibre-Reinforced Plastics for the Production of Curved Textile Reinforced Concrete Elements. Open Journal of Composite Materials, 4, 191-200. doi: 10.4236/ojcm.2014.44021.
References
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[1] Curbach, M. and Scheerer, S. (2011) Concrete Light—Possibilities and Visions. In: Sruma, V., Ed., Proceedings of the fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Prague, 8-10 June 2011, 29-44. [2] Brameshuber, W. (2006) Textile Reinforced Concrete. RILEM Report 36. State-of-the-Art Report of RILEM Technical Committee, TC 201-TRC. [3] Funke, H., Gelbrich, S., Ehrlich, A. and Kroll, L. (2014) Rheological and Mechanical Development of a Fiber-Reinforced Concrete for an Application in Civil Engineering. SOJ Materials Science & Engineering, 2, 1-4. http://dx.doi.org/10.15226/sojmse [4] Hofstadler, C. (2008) Schalarbeiten. Springer-Verlag, Berlin, Heidelberg. [5] Curbach, M. and Jesse, F. (2009) Verstarken mit Textilbeton. In: Bergmeister, K., Fingerloos, F. and Worner, J.-D., Eds., Betonkalender 2010, Teil 1, Abschn. VII. Ernst & Sohn, Berlin. [6] Funke, H., Gelbrich, S., Ehrlich, A. and Kroll, L. (2014) A Fibre-Reinforced Architectural Concrete for the Newly Designed Facade of the Poseidon Building in Frankfurt am Main. Journal of Materials Science Research, 3, 33-39. http://dx.doi.org/10.5539/jmsr.v3n3p33 [7] Greiner, S. (2007) Zum Tragverhalten von Schalen aus ultrahochfestem Faserfeinkornbeton (UHFFB). Z. Betonund Stahlbetonbau, 100, 77-80. [8] Funke, H., Gelbrich, S. and Ehrlich, A. (2013) Development of a New Hybrid Material of Textile Reinforced Concrete and Glass Fibre Reinforced Plastic. In: Hufenbach, W.A. and Gude, M., Eds., Procedia Materials Science, Materials Science Engineering, Symposium B6—Hybrid Structures, 2, 103-110. [9] Curbach, M., Ortlepp, S., Brückner, A., Kratz, M., Offermann, P. and Engler, T. (2003) Entwicklung Einer Grobformatigen, Dünnwandigen, Textilbewehrten Fassadenplatte. Z. Betonund Stahlbetonbau, 98, 345-350. http://dx.doi.org/10.1002/best.200301720 [10] Herzog, T. and Moro, J.L. (1992) Gesprach mit Felix Candela. In: Arcus 18: Zum Werk von Felix Candela—Die Kunst der leichten Schalen, Verlagsgesellschaft Rudolph Müller, Koln, 10-22. [11] Preisinger, C., Harrer, J., Ressl, C. and Kollegger, J. (2005) Stahlbetonschalen ohne Schalung—Ein neuer Weg im Schalenbau. Betonund Stahlbetonbau, 100, 31-38.
http://dx.doi.org/10.1002/best.200590005 [12] Kroll, L. (2005) Berechnung und technische Nutzung von anisotropiebedingten Werkstoff—Und Struktureffekten für multifunktionale Leichtbauanwendungen. Habilitationsschrift, TU Dresden, Dres-
den. [13] Kaufmann, J. (2014) Beitrag zu anisotropiebedingten Koppeleffekten bei rotationssymmetrischen mehrschichtigen Faserverbundbauteilen. Promotionsschrift, TU Chemnitz, Chemnitz. [14] Dallinger, S., Pardatscher, H. and Kollegger, J. (2009) Zweifach gekrümmte Schalen aus Betonfertigteilen. Z. Forschung & Entwicklung für Zement und Beton, 5, 32-33. [15] Zapf, W. (1990) Schalung für grobformatige gekrümmte Stahlbetonfertigteile. German Patent No. DE 3841579 A1. [16] Henri, V. (1987) Verfahren und Vorrichtung zum Formen von gebogenen Sektionen aus Beton. European Patent No. EP 0 238 168 A1. [17] Schürmann, H. (2007) Konstruieren mit Faser-Kunststoff-Verbunden, Springer Verlag, Berlin, Heidelberg, New York.