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Author(s):	Fellin, Wolfgang
Title:	Zum Nachweis der Standsicherheit in der tiefen Gleitfuge
Abstract:	Der Nachweis der Standsicherheit in der tiefen Gleitfuge ist einer der Standardnachweise für eine verankerte Baugrubenwand. Nach einigem hin und her ist man derzeit wieder bei einer Sicherheitsdefinition angelangt, die der ursprünglichen Idee von Kranz entspricht. In diesem Beitrag wird gezeigt, warum dieser Nachweis an einigen Stellen mechanisch diskussionswürdig ist. Deshalb wird angeregt, einen direkten Nachweis über die Beanspruchung und den Widerstand in der Gleitfuge zu führen, welcher konform mit den anderen geotechnischen Nachweisen des Nachweisverfahrens 2 nach Eurocode ist. Für ein Berechnungsbeispiel ergeben sich mit dem hier vorgeschlagenen Nachweis ähnliche Ankerlängen wie bei einem Nachweis nach Kranz. On the verification of stability at the lower failure plane. The verification of stability at the lower failure plane is a standard analysis for the design of anchored retaining walls. The current safety definition uses the old idea of Kranz. This causes some mechanical problems, which are shown here. It is suggested to use a direct verification by comparing the effect of the actions with the resistance in the lower failure plane, which is in line with other verifications according to the design approach 2 of the Eurocode 7. A numerical example with variable parameters shows that the optimized lengths of the anchor obtained by this new approach are similar to the lengths obtained by the safety definition according to Kranz.
Source:	geotechnik 40 (2017), No. 3
Page/s:	162-171
Language of Publication:	German

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