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Gewählte Publikation:

Kromoser, B; Kollegger, J.
(2018): Conceptual design, geometry optimization and calculation of the concrete shell bridge AM2 built with PFHC
BETON- STAHLBETONBAU. 2018; 113(2): 88-95. FullText FullText_BOKU

Abstract:
The authors developed a new shell construction method, called Pneumatic Forming of Hardened Concrete (PFHC), in the past years within the research project "Free formed surfaces out of concrete". A simple air cushion and additional post-tensioning tendons transform a flat concrete plate into a double curved shell. Thus, the complicated spatially curved formwork and the falsework are not required any more. The next development step was to use the construction method for a first practical application. On behalf of the Austrian Railways (OBB) two concrete shells, an event canopy and a concrete shell bridge serving as deer pass over the new two rail track Koralmbahn were built in Carinthia in Austria. If the geometry of a concrete shell is optimized according to the impacting loads, concrete shells can be characterized by an efficient load bearing behavior. The present contribution describes the conceptual design, the computer-aided geometry optimization and the calculation of the two concrete shells by considering the boundary conditions needed for the applicability of PFHC.
Autor/innen der BOKU Wien:
Kromoser Benjamin
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