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Home > Science, Technology & Agriculture > Technology: general issues > Zwangsbeanspruchungen in Einer Schleusenkammersohle Wahrend Der Hydratation
Zwangsbeanspruchungen in Einer Schleusenkammersohle Wahrend Der Hydratation

Zwangsbeanspruchungen in Einer Schleusenkammersohle Wahrend Der Hydratation


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About the Book

Diplomarbeit aus dem Jahr 2002 im Fachbereich Ingenieurwissenschaften - Bauingenieurwesen, Note: 1,7, Karlsruher Institut fur Technologie (KIT) (Bauingenieur- und Vermessungswesen ), Sprache: Deutsch, Abstract: Inhaltsangabe: Problemstellung: In frisch hergestellten Betonbauteilen fuhrt beim Abbinden des Zementes der exotherme Hydratationsprozess zu einem Temperaturanstieg. Noch bevor aufgrund einer niedrigen Umgebungstemperatur und nachlassender Warmefreisetzung die Abkuhlung beginnt, bilden sich Festkorpereigenschaften aus. Ist die Verformung wahrend der Temperaturanderung im Bauteil ganz oder auch nur teilweise behindert, so fuhrt dies zu Zwangsspannungen. Diese konnen beim Uberschreiten der aktuellen Zugfestigkeit Risse verursachen. Eine wesentliche Anforderung an Bauwerke des Verkehrswasserbaus, wie beispielsweise Wehranlagen und Schleusen, ist die Wasserundurchlassigkeit, die massgeblich uber die Begrenzung der zu erwartenden Rissbreiten im Bauwerk gewahrleistet wird. Bauteile von solchen Wasserbauwerken weisen im Allgemeinen deutlich grossere Querschnittsabmessungen aus, als sie im Hoch- und Tiefbau ublicherweise anzutreffen sind. Dies hat einen grossen Einfluss auf die Geschwindigkeit, mit der die Temperatur aus dem Bauwerk abfliesst, sowie auf die Grosse der entstehenden Zwangsspannungen. Gang der Untersuchung: Im Rahmen dieser Arbeit werden am Beispiel der Kammersohle der Schleuse Rothensee bei Magdeburg die auftretenden Spannungen infolge Abliessen der Hydratationswarme mit der Methode der Finiten Elemente analysiert. Zur Ermittlung der Zwangsbeanspruchungen mit dem Programm HEAT werden geeignete Modellansatze ausgewahlt. Dazu zahlen u.a. Ansatze zur Modellierung der zeitlichen Entwicklung der Materialparameter, sowie des viskoelastischen Verhaltens von Beton. Des weiteren werden die berechneten Temperaturen und Dehnungen mit Messwerten verglichen und diskutiert. Anhand der ermittelten Spannungen wird eine rissbreitenbeschrankende Bewehrung fur die Kammer


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Product Details
  • ISBN-13: 9783838661346
  • Publisher: Diplom.de
  • Publisher Imprint: Diplom.de
  • Height: 210 mm
  • No of Pages: 120
  • Spine Width: 7 mm
  • Width: 148 mm
  • ISBN-10: 3838661346
  • Publisher Date: 25 Nov 2002
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Weight: 168 gr


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