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Author(s):	Aulbach, Benjamin; Ziegler, Martin
Title:
Abstract:	In jüngster Vergangenheit wurden auf diversen Tagungen Diskussionen bezüglich des tatsächlichen Ablaufs bzw. der Versagensform des hydraulischen Grundbruchs und dem daraus abzuleitenden Nachweisformat geführt. Der vorliegende Beitrag gibt einen Überblick über verschiedene Versuche und Untersuchungen seit Karl Terzaghi bis heute. Sowohl diverse Versuche als auch eigene numerische Berechnungen bestätigen, dass der sogenannte Terzaghi-Körper ein Gedanken- und Rechenmodell ist, das die Vorgänge des hydraulischen Grundbruchs in nichtbindigem Baugrund hinreichend genau erfasst und in der Regel für den Sicherheitsnachweis verwendet werden sollte. Lediglich bei bindigen Böden oder speziellen Randbedingungen wie Auflastfiltern und Entspannungsbohrungen sollten erweiterte Modelle und Methoden verwendet werden. Phenomena and design procedure of hydraulic heave - Plea for the Terzaghi-body. These days the phenomena of hydraulic heave and the way of verification of resistance to failure by hydraulic heave have been discussed on several conferences. This paper gives an overview of model tests beginning with Karl Terzaghi up to today. Different model tests as well as own numerical investigations show that the so called Terzaghi-body is a well-fitting model. It sufficiently describes the phenomena of hydraulic heave in non-cohesive soil and thus normally should be used for the verification of resistance to failure by hydraulic heave. Only for cohesive soils or special conditions like surcharge filters and bleeder wells more detailed models and methods should be applied.
Source:	geotechnik 37 (2014), No. 1
Page/s:	6-18
Language of Publication:	German

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