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Author(s):	Bertram, Guido; Hegger, Josef
Title:	Verbundverhalten von vorgespannten Litzen in UHPC
Abstract:	Ultrahochfester Beton (UHPC = Ultra-High Performance Concrete) ist hervorragend geeignet für vorgespannte Bauteile. Um eine sichere und dennoch wirtschaftliche Bemessung von vorgespannten Trägern mit sofortigem Verbund vornehmen zu können, muss das Verankerungsverhalten der Litzen bekannt sein. Die hohen Verbundfestigkeiten führen zu kurzen Übertragungslängen und verbessern dadurch die Querkrafttragfähigkeit. Der vorliegende Beitrag stellt ein Verbundmodell zur Ermittlung der Übertragungslänge bei UHPC vor. Das Modell baut auf den experimentellen Ergebnissen aus auf. Bond Behavior of prestressed Strands in UHPC. Part 2: Bond model derivation for the calculation of transfer lengths Ultra-High Performance Concrete (UHPC) is an appropriate construction material for pretensioned girders. To ensure an economic but safe design a detailed knowledge of the behavior of pretensioned strands in the anchorage zone is essential. The dimension of the bond anchorage zone favors the cost-effective design of pretensioned girders, especially when the shear resistance is decisive. In this article a bond model is derived to calculate the transfer length. The model bases on the experimental results in.
Source:	Beton- und Stahlbetonbau 107 (2012), No. 1
Page/s:	23-31
Language of Publication:	German

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