Concrete shells are aesthetic and economic supporting structures, if properly designed. They can absorb high loads and can span large areas with little material. Unfortunately, high costs for the complicated formwork avoid a wider use in practice. A new shell construction method called Pneumatic Forming of Hardened Concrete (PFHC) was developed by Prof. Benjamin Kromoser and Prof. Johann Kollegger (TU Wien). Within a tight development process numerous material tests, tensile tests, bending tests and two large scale experiments were performed. Now, the Austrian railways (ÖBB) used the construction method to build the deer pass AM2 as concrete shell bridge over the two-rail track Koralmbahn in Carinthia in Austria. At first a test shell, which now serves as event canopy (called Manta), was built with the plan dimensions 26.5 x 19.1 m and a height of 4.2 m. Directly after that the main supporting structure, the shell bridge, was built (plan dimensions 36.2 x 38.7 m, height 7.6 m).




2018 Journal article

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

** Kromoser, B; Kollegger, J; Kari, H; Gradenegger, K; Ganster, M Practical Application of an innovative concrete shell construction method: Construction of the deer pass AM2 by use of PFHC. BETON- STAHLBETONBAU. 2018; 113(3): 222-232. WoS

Article in conference proceedings

Kollegger, J.; Kromoser, B.; Suza, D.: (2018): Erection of bridges and shells without formwork - challenges for the computational modelling. [Conference on Computational Modelling of Concrete and Concrete Structures (Euro-C), Bad Hofgastein, 26. February - 1 March 2018] In: Meschke, G.; Pichler, B.; Rots J.G. (Eds.), Computational Modelling of Concrete Structures ; ISBN: 978-1-138-74117-1

2017 Journal article

** Kromoser, B; Kollegger, J Active Shaping of hardened Concrete Elements for the Production of spatially crushed Concrete Surfaces. BETON- STAHLBETONBAU. 2017; 112(2): 106-115. WoS FullText FullText_BOKU

Article in conference proceedings

Kromoser, B.; Kollegger, J.: (2017): Construction of a thin walled concrete shell event canopy.
[CCC Tokaj, Tokaj, 31.08. - 1.09.2017]

Kromoser, B.; Kollegger, J.: (2017): How to inflate a hardened concrete shell with a weight of 80 t.
[IASS Annual Symposium 2017 , Hamburg, 25. - 28. September 2017]

Schmitt, C.; Kromoser, B.; Harmening, C.; Falkner, J.; Neuner, H.-B.; Kollegger, J.: (2017): Geodetic surface based methods for applications in civil engineering .
[7th International Conference on Engineering Surveying, Lissabon, 18. - 20.10.2017] In: A. Kopáčik et al. (Hrg.), Ingeo 2017, Proceedings of the 7th International Conference on Engineering Surveying

2015 Journal article

** Kromoser, B; Kollegger, J Pneumatic forming of hardened concrete - building shells in the 21st century. STRUCT CONCRETE. 2015; 16(2): 161-171. WoS FullText FullText_BOKU

Kromoser B.; Kollegger J.: (2015): Application Areas for Pneumatic Forming of Hardened Concrete. Journal of the IASS, 56, 187-198; ISSN 1028-365X

Article in conference proceedings

Kollegger, J.; Foremniak, S.;Kromoser, B.: (2015): Egg-Graben-Brücke, Wildbrücke AM2, Lafnitzbrücke - Anwendung von neuen Bauverfahren für Brücken in Österreich.. [25. Dresdner Brückenbausymposium, Dresden, 9.3. - 10.3.2015] ; ISBN: 978-3-86780-421-9


Kromoser, B.: (2015): Pneumatisches Verformen Von Ausgehärtetem Beton - Die Errichtung Von Betonschalen Aus Ursprünglich Ebenen Platten.; TU Wien, Institut für Tragkonstruktionen - Forschungsbereich für Stahlbeton und Massivbau

PUBLIZIERTER Beitrag für wissenschaftliche Veranstaltung

Kollegger, J.; Foremniak, S.; Kromoser, B.: (2014): Innovations for the Design of Concrete Bridges Developed at Vienna University of Technology. [10th Japanese German Bridge Symposium in Munich,, München, 16.9. - 17.9.2014]

Kollegger, J.; Foremniak, S.; Kromoser, B.: (2014): Innovative Proposal for the Construction of Concrete Bridges. [International Seminar on Long Span Bridge, Shanghai, 23.10. - 25.10.2014]

2012 Article in conference proceedings

Kollegger, J., Kromoser, B., Dallinger, S.: (2012): The building of ice and concrete shells by employing pneumatic formwork. [Second International Conference on Flexible Formwork, Bath, 27.6. - 29.6.2012] In: Orr, J.; Evernden, M.; Darby, A.; Ibell, T. (Eds.), Proceedings of the Second International Conference on Flexible Formwork; ISBN: 978-0-86197-184-8; S