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Author(s):	Rusch, Mona; Lowiner, Christian; Kurath, Josef
Title:
Abstract:	CPC (Carbon Prestressed Concrete)-Platten sind mit Carbonfasersträngen armiert und vorgespannt. Diese neuentwickelten Platten sind bei gleicher Biegetragfähigkeit deutlich schlanker als herkömmliche Stahlbetonplatten. Dadurch werden das Gewicht und der Materialverbrauch gegenüber herkömmlichen Stahlbetonlösungen deutlich reduziert. Die Tragwirkung von CPC-Platten ist analog derjenigen von vorgespanntem Stahlbeton. Die Bemessung erfolgt anhand der bauaufsichtlichen Zulassung Z-71.3-42 des Deutschen Instituts für Bautechnik. Insbesondere bei Brückenbelägen wird rechnerisch häufig der Nachweis der Einzellast (Unterhaltsfahrzeug) maßgebend. In diversen Versuchen an der TU Graz sowie an der Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) konnte gezeigt werden, dass die Einzellasten deutlich besser abgetragen werden können, als in der Zulassung rechnerisch angesetzt. Die mitwirkende Breite spielt dabei eine entscheidende Rolle. Large load-bearing reserves for point loads on CPC panels CPC (carbon prestressed concrete) panels are reinforced and prestressed with carbon fibre strands. Thanks to the high strength of the carbon reinforcement, the prestressing and its corrosion resistance, structural components in CPC design can be made significantly slimmer and lighter with the same bending load capacity. This significantly reduces the weight and material consumption compared to conventional solutions. The load-bearing behaviour of CPC panels is analogous to prestressed reinforced concrete. The design is carried out based on the technical approval Z-71.3-42 of the DIBt (Deutschen Instituts für Bautechnik). Especially in the case of bridge decks the point load (maintenance vehicle) is often decisive for the static verification. In various tests at the Graz University of Technology, as well as at the ZHAW (Zürcher Hochschule für Angewandte Wissenschaften), it could be shown that the point loads can be transferred much better than calculated according to the approval. The effective width plays a decisive role in this matter.
Source:	Beton- und Stahlbetonbau 118 (2023), No. 8
Page/s:	589-606
Language of Publication:	German

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