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Vol. 55 (2014) No. 4 December n. 182


Tsuboi Proceedings Award Paper for 2013: Parapluie - Ultra Thin Concrete Shell Made of UHPC by Activating Membrane Effects

< Table of Contents for Vol. 55 (2014) No. 4 December n. 182
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 55 (2014) No. 4 December n. 182
  • Pages: 201-212
  • Title: Tsuboi Proceedings Award Paper for 2013: Parapluie - Ultra Thin Concrete Shell Made of UHPC by Activating Membrane Effects
  • Author(s): P. Eisenbach, R. Vasudevan, M. Grohmann, K. Bollinger and S. Hauser
  • Keywords: Ultra thin concrete shells, parametric form finding optimization, free form, UHPC, stiffness by membrane effects
Abstract
Parapluie is an architectural concrete shell structure for a bus stop shelter designed for a serial production by multiple reuse of the formwork. It is made of ultra-high-performance-concrete that is reinforced with a layered micro mat reinforcement distributed over the whole cross section with zero distance to the outer surfaces. This material composition leads to a highly ductile behavior that is substantiated by the biaxial homogenous cross section layout that allows a linear elastic structural analysis. The aim was to achieve a concrete shell that is as slender and lightweight as possible. By a parametric form finding process a system was developed that is able to transfer the loads of the shell mostly by membrane effects. The result is a concrete shell with no steel embedded items and an edge thickness of less than 25 mm.

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