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Author(s):	Hofmann, Robert; Vollmert, Lars
Title:
Abstract:	The introduction of Austrian standard ONR 24810 provides a design concept for earth dams to protect against massive rockfall events. The essential basis for the concept is the differentiation into five construction types of rockfall embankments due to different system behaviour. The structure therefore has to be assigned to one type at the beginning of the design process. The types available for selection are a simple earth dam (type I), a dam with quarry stone facing (type II), a geosynthetic-reinforced dam without increased crosswise distribution of the impact loads (type III), a geosynthetic-reinforced dam with increased crosswise distribution (type IVa) and with strongly increased crosswise distribution (type IVb) of the impact loads. Eurocode 7 (EC 7) is considered accordingly. The design concept is currently being discussed and used in Austria, Switzerland, Germany and Norway. Presented are the design principle and the construction as executive summary. Mit der Einführung der ONR 24810 liegt ein Bemessungskonzept für Erddämme zum Schutz gegen massive Steinschlagereignisse vor. Wesentliche Grundlage bei dem Konzept stellt die Unterscheidung in fünf Bautypen von Steinschlagschutzdämmen mit unterschiedlichem Systemverhalten dar. Vor Beginn der Bemessung muss das Bauwerk einem Typ zugeordnet werden. Dabei stehen der reine Erddamm (Typ I), der Damm mit Steinschlichtung (Typ II), der geokunststoffbewehrte Damm ohne erhöhte Querverteilung der Impaktlasten (Typ III), der geokunststoffbewehrte Damm mit erhöhter Querverteilung (Typ IVa) und mit stark erhöhter Querverteilung (Typ IVb) der Impaktlasten zur Auswahl. Bei der geotechnischen Nachweisführung wird der Eurocode 7 (EC 7) umgesetzt. Das Bemessungskonzept wird in Österreich, in der Schweiz, in Deutschland und Norwegen diskutiert und verwendet. Zusammenfassend vorgestellt werden die Bemessung und Konstruktion.
Source:	Geomechanics and Tunnelling 13 (2020), No. 1
Page/s:	21-31
Language of Publication:	English/German

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