Preview

Author(s):	Schlaich, Mike; Apitz, Andreas; Jesse, Frank
Title:
Abstract:	Für Spannbetonbrücken können Spannglieder aus carbonfaserverstärktem Kunststoff (CFK) verwendet werden. Solche Zugglieder zeichnen sich durch hohe Festigkeit aus, sie rosten und ermüden nicht und sie haben ein sehr geringes Gewicht. Ihre Anwendung kann zu mehr Nachhaltigkeit und Eleganz im Brückenbau führen, weil so schlankere Querschnitte möglich werden und gleichzeitig die Dauerhaftigkeit erhöht werden kann. In diesem Beitrag werden zuerst der Stand der Carbonbetonforschung an der TU Berlin und der Stand der Technik bei Brücken mit Carbonelementen vorgestellt. Hauptsächlich geht es im Anschluss um Fragen der Versagensankündigung und der Querschnittsbemessung von Bauteilen mit Carbonvorspannung. Zuletzt wird der Entwurf einer integralen Rahmenbrücke aus Betonfertigteilen mit Carbonvorspannung vorgestellt. Bridges made of prestressed carbon concrete Tendons made of carbon fiber reinforced polymers (CFRP) can be used for the prestressing of concrete bridges. Such tendons can be highly tensioned, they do not rust or fatigue, and they are very lightweight. Their application can lead to more sustainability and elegance in bridge construction, as they allow for slimmer cross-sections and at the same time increase durability. In this paper, first the status of carbon concrete research at the TU Berlin and the state of the art in bridges with carbon elements is presented. The main focus is then shifted to questions of warning to failure and the cross-sectional design of components with prestressed and non-prestressed carbon reinforcement. Finally, the design of a prototype integral frame bridge made at the TU Berlin with precast CFRP posttensioned girders is presented.
Source:	Beton- und Stahlbetonbau 115 (2020), No. 9
Page/s:	684-696
Language of Publication:	German

I would like to buy the article

You can download this article for 25 € as a PDF file (0.84 MB).
The PDF file can be read, printed and saved.
Duplication and forwarding to third parties is not allowed.

Please enter your email address now to start the order process.
The link for the download will be sent to the email address stated after the
order process has been completed.

Your email address

I am an online subscriber

As an online subscriber of the journal "Beton- und Stahlbetonbau" you can access this article via Wiley Online Library.

I would like to order "Beton- und Stahlbetonbau"

This article has been published in the journal "Beton- und Stahlbetonbau". If you would like to learn more about the journal, you can order a free sample copy or find out more information on our website.

Prices include VAT and postage. Prices for 2017/2018.
€ Prices apply to Germany only. Subject to alterations, errors excepted.