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Abstract:	The interaction between a protection structure and an acting process (e.g. debris flow) has only been described in a few publications so far. In particular, the acting forces and stresses have only been measured under real conditions in a few cases. Therefore it was necessary to design a monitoring barrier that could measure both the process parameters and the forces involved and their transfer into the ground. Such a structure was built 2016 in the Gadria torrent (South Tyrol). Data has meanwhile been measured, recorded and evaluated from five debris flows. With flow heights up to 2 m, densities up to 2,200 kg/m3 and velocities between 1 and 6 m/s, the measured impact forces could be compared with the existing loading approaches. The findings serve as a basis for the improvement of approaches for the design of protection structures. Die Interaktion zwischen einem Schutzbauwerk und einem einwirkenden Prozess (z. B. Murgang) ist bisher nur in wenigen Publikationen beschrieben. Insbesondere die dabei auftretenden Kräfte und Spannungen wurden unter realen Bedingungen nur in wenigen Fällen gemessen. Deshalb war es notwendig; eine Konstruktion zu entwerfen, die sowohl die Prozessparameter als auch die auftretenden Kräfte und deren Abtragung messen kann. So ein Bauwerk wurde 2016 am Gadria-Bach (Südtirol) errichtet. Bislang konnten Messdaten von fünf Murgängen aufgezeichnet und ausgewertet werden. Bei Fließhöhen von bis zu 2 m, Dichten bis zu 2.200 kg/m3 sowie Geschwindigkeiten zwischen 1 und 6 m/s konnten die gemessenen Anprallkräfte mit den bestehenden Lastansätzen verglichen werden. Die Erkenntnisse bilden die Grundlage zur Verbesserung der Ansätze zur Bemessung von Schutzbauwerken.
Source:	Geomechanics and Tunnelling 13 (2020), No. 1
Page/s:	52-56
Language of Publication:	English/German

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