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Author(s):	Grabe, J.; Henke, S.; Kalle, H.
Title:
Abstract:	Insbesondere in den letzten Jahren wird das Thema Nachhaltigkeit und ressourcenschonender Umgang mit der Umwelt immer stärker in Politik und Gesellschaft diskutiert. Auch in der Geotechnik ist viel Potential vorhanden, nachhaltig mit den Rohstoffen umzugehen. In diesem Beitrag wird hierzu auf die Möglichkeiten der Wiederverwendung von Stahlspundwänden eingegangen. Dabei wird ein wesentliches Augenmerk auf die Möglichkeiten des Recyclings des Spundwandstahls gelegt. Weiterhin erfolgt eine ausführliche Diskussion bezüglich des Ziehens von Spundwänden und den hierbei auftretenden Problemen. So ist häufig ein Anstieg des Herausziehwiderstands über die Zeit feststellbar. Anhand verschiedener Finite-Elemente-Untersuchungen wird dieser Zuwachs des Herausziehwiderstands numerisch untersucht, und es können verschiedene Faktoren herausgearbeitet werden, die dem zugrunde liegen. Investigations regarding the re-use of sheet-piles. Especially in recent years the topic sustainability and careful handling of environment are discussed more and more in politics and society. In geotechnical engineering there is great potential to deal more sustainable with the used resources. In this contribution, the possibilities of re-using steel sheet-piles are discussed. A main scope is set on the possibilities of recycling of the steel. Furthermore, the pull-out process of sheet-piles is discussed and problems during the pull-out process are described. In-situ often an increase of pull-out forces over time can be noticed. Several numerical investigations using finite element method are presented to investigate the possible factors which influence the increase in pull-out forces.
Source:	Bautechnik 86 (2009), No. 5
Page/s:	270-280
Language of Publication:	German

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