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Design process for a prototype concrete shells using a hybrid cable-net and fabric formwork

Veenendaal D. and Block P.
Engineering Structures
2014
doi: 10.1016/j.engstruct.2014.05.036

By combining a cable net with a fabric, it is possible to scale the concept of flexible formworks to the size of large-span roofs and bridges, especially when applying a thin coat of concrete or mortar to form a shell structure. By carefully designing the cable net and its topology, and calculating and controlling the prestressing forces, it is possible to form a wide range of anticlastic shapes, beyond those of the hyperbolic paraboloid. A complete workflow for the computational design and optimization of a shell shape and its corresponding flexible formwork are presented as a proof-of-concept for future work. A prototype shell structure was built based on this workflow to validate the overall approach, and identify further challenges. In addition, a first comprehensive overview of flexible formworks for anticlastic shells is presented to frame the present research.

BibTeX

@article{Veenendaal2014,
    author  = "Veenendaal, D. and Block, P.",
    title   = "Design process for a prototype concrete shells using a hybrid cable-net and fabric formwork",
    journal = "Engineering Structures",
    year    = "2014",
    volume  = "75",
    number  = "",
    pages   = "39-50",
    month   = "",
    doi     = "10.1016/j.engstruct.2014.05.036",
    note    = "",
}

Related publications

Veenendaal D., Bakker J. and Block P.Structural design of the cable-net and fabric formed, ferrocement sandwich shell roof of NEST HiLo,Proceedings of the International Association for Shell and Spatial Structures (IASS) Symposium,Amsterdam,2015 (August).
Veenendaal D., Bezbradica M., Novak D. and Block P.Controlling the geometry and forces of hybrid cable-net and fabric formworks,Proceedings of the IASS-SLTE 2014 Symposium,Brasilia, Brazil,2014.
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