Computational design exploration of a segmented concrete shell building floor system

Costa, Eduardo; Oval, Robin; Shepherd, Paul; Orr, John

Abstract

The construction industry is responsible for nearly half of the UK's carbon dioxide emissions and the use of an extremely large volume of concrete - the world's most widely used man-made material - accounts for more than 7% of global carbon dioxide emissions. The scale of this problem spawned research to explore the potential for structurally efficient non-prismatic geometries to reduce the amount of concrete used in building elements substantially, thus also reducing their embodied carbon dioxide footprint. In particular, the research focused on segmented thin concrete shells as floor slabs, leveraging computational design and digital fabrication methodologies to automate their production off site. An important part of this research was the development of a computational framework for the design of thin concrete shells in order to make such a construction methodology accessible to building designers in practice. The framework combines solutions for parametric modelling, finite-element analysis, isogeometric analysis, form-finding and optimisation, along with embedded fabrication constraints specific to the project's automated manufacturing system. The application of the developed computational framework in the design of a 4.5 m × 4.5 m prototype is documented in this paper, illustrating how automating concrete construction can transform the industry towards net-zero.

• Journal Article Type: Article
• Acceptance Date: Mar 15, 2023
• Online Publication Date: Mar 30, 2023
• Publication Date: Dec 31, 2023
• Deposit Date: Apr 26, 2023
• Publicly Available Date: Apr 26, 2023
• Journal: Proceedings of the Institution of Civil Engineers: Structures and Buildings
• Print ISSN: 0965-0911
• Electronic ISSN: 1751-7702
• Publisher: Thomas Telford
• Peer Reviewed: Peer Reviewed
• Volume: 176
• Issue: 12
• Pages: 1010-1021
• DOI: https://doi.org/10.1680/jstbu.22.00156
• Keywords: Building; Construction, Structural Engineering, computational design, concrete structures, digital fabrication, finite-element, modelling shells
• Public URL: https://uwe-repository.worktribe.com/output/10625933
• Publisher URL: https://www.icevirtuallibrary.com/doi/10.1680/jstbu.22.00156