Institut für Tragwerksentwurf  |  FK3 Architektur Bauingenieurwesen Umweltwissenschaften   |  Technische Universität Braunschweig

in: Proceedings of the International Association for Shell and Spatial Structures (IASS), Symposium 2015, Amsterdam, Future Visions, 17 – 20 August 2015, Amsterdam, The Netherlands


Today structural design is mostly guided by cast-on site construction members, with simple linear formwork. Those load-bearing structures are mostly mass-intensive and inefficient in terms of material strength. Saving the “grey embodied” energy of those heavy members will be very important in the future. The developed construction method of the “digital workflow” for design and fabrication with CNC-milled formwork of non-standard joint structural members has shown its potential for spatial and shell structures in previous research projects as in Lehmberg et al. [1]. By combining the research of spatial and shell elements with non-metallic pre-stressing technology precast dry jointed structural members can be used to utilize the strength of the material efficiently. With the developed dry jointing systems a modular, efficient and cost effective coffered ceiling can be build (Figure 3) which will be capable by spatial nodes to create dome structures in the future (Figure 13). This ongoing research is part of the priority programme 1542 by the German Research Foundation (DFG) on digital fabrication for new jointing systems which has been extended to hybrid beam and slab structures.

complete publication

Keywords: UHPFRC, modular, hybrid, T-beam, slab, non-standard jointing principles, lightweight construction, resource efficiency, digital workflow.