Form finding for post tensioned, 3D printed fluid containers

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributedpeer-review

Contributors

Abstract

The 3D printing technology of mineral materials offers the possibility of manufacturing geometrically complex shapes. However, it is still difficult to integrate reinforcement into printed geometries. This production-related limitation results in a significant restriction in the load-bearing capacity of printed components. Therefore, the technology has been mainly used for decorative components so far. 3Dprinted load-bearing structures should not be derived from conventional shapes of reinforced concrete but rather from their inherent functional and structural requirements. In this paper, we explore the strategy of combining large-scale 3D-printed, purely compression-loaded components with posttensioned, unbonded tendons to generate statically and economically efficient systems. The separation into mineral, purely compression-loaded, and metallic, tension-loaded elements allows the advantages of the printing technology and the material’s specific load-bearing behaviour to be exploited, as well as enabling better recyclability through the separation of construction materials. Using the example of large fluid containers, the form finding for systems under hydrostatic pressure and their construction with the described static system of separated compression and tension elements is investigated. These containers are considered highly relevant structures in the wake of the energy transition and climate change.

Details

Original languageEnglish
Title of host publicationIASS (International Association for Shell and Spatial Structures) Annual Symposia 2023
PublisherInternational Association for Shell and Spatial Structures (IASS)
Publication statusPublished - 2023
Peer-reviewedYes

Keywords

Keywords

  • form finding, computational, 3d printing