Abstract
This paper presents a method for the construction of non-uniform precast concrete shell structures from unique parts. A novel method of discontinuous post-tensioning is introduced which allows tension to be taken through the connections. This increases the formal possibilities of the system beyond compression-only funicular forms. It also allows live loading to be catered for without significant thickening of the structure. Most significantly, the post-tensioning system allows for an almost total elimination of falsework a significant impediment to the realistion of complex shell structures. This advancement reduces resources needed for assembly, and increases the overall robustness of the system.
Also presented are a series of refinements that add to the geometric precision of individual concrete elements cast in lasercut PET moulds. These include the development of a casting rig used to fix casting moulds in the right position during casting and algorithms to produce mold details to mediate between the unique components and the repeated rig forms.
The last design experiment is the most elaborate, demonstrating a pavillion structure which incorporates all areas of development. The successful execution of this design experiment allows us to conclude that the building system in its current state of development is ready to be tested in a scale larger than the typical research pavilion.
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References
Block, P., Veenendaal, D.: Design process for prototype concrete shells using a hybrid cable-net and fabric formwork. Eng. Struct. 75, 39–50 (2014)
Block, P., Lachauer, L., Rippmann, M.: Form finding to fabrication: a digital design process for masonry vaults. In: Proceedings of the IASS, Shanghai (2010)
Block, P., Davis, L., Rippmann, M., Pawlofsky, T.: Efficient and expressive thin-tile caulting using cardboard formwork. In: Proceedings of the IABSE-IASS Symposium, London (2011)
Dallinger, S., Kollegger, J.: Thin post-tensioned concrete shell structures. In: Tailor Made Concrete Structures, pp. 703–706. Taylor & Francis, London (2008)
Day, A.: An introduction to dynamic relaxation. Engineer 219, 218–221 (1965)
Isler, H.: New shapes for shells. Bull. Int. Assoc. Shell Struct. 8, c-3 (1960)
Kilian, A., Ochsendorf, J.A.: Particle spring systems for structural form finding. Int. J. Shell Spat. Struct. 46(2), 77–84 (2005)
Larsen, N.M.: Generative algorithmic techniques for architectural design. Ph.D. thesis, Aarhus School of Architecture, Aarhus, pp. 123–133 (2012)
Larsen, N.M., Pedersen, O.E., Pigram, D.: A method for the realization of complex concrete gridshell structures in pre-cast concrete. In: Synthetic Digital Ecologies: proceedings ACADIA, pp. 209–216. The Printing House, San Francisco (2012a)
Larsen, N.M., Pedersen, O.E., Pigram, D.: Realisation of complex precast concrete structures through the integration of algorithmic design and novel fabrication techniques. In: Proceedings AAG, pp. 161–174. Springer, Wien (2012b)
Pedersen, O.E.: The tectonic potentials of concrete. Ph.D. thesis, Aarhus School of Architecture, Aarhus, pp. 78–90, 131–177 (2013)
West, M.: Thin shell concrete from fabric molds. Available At: http://www.umanitoba.ca/cast_building/assets/downloads/PDFS/Fabric_Formwork/Thin-shell_Concrete_From_Fabric_Forms_SCREEN.pdf (2009). Accessed 16 Apr 2012
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Pedersen, O.E., Larsen, N.M., Pigram, D. (2015). Post-tensioned Discrete Concrete Elements Developed for Free-form Construction. In: Block, P., Knippers, J., Mitra, N., Wang, W. (eds) Advances in Architectural Geometry 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-11418-7_2
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DOI: https://doi.org/10.1007/978-3-319-11418-7_2
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