Item: ALPS2.0: INTERACTION OF FLEXIBLE ROCKFALL BARRIERS WITH STATIC AND DYNAMIC SNOW PRESSURE
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Title: ALPS2.0: INTERACTION OF FLEXIBLE ROCKFALL BARRIERS WITH STATIC AND DYNAMIC SNOW PRESSURE
Proceedings: International Snow Science Workshop 2024, Tromsø, Norway
Authors:
- Gabriel Marc [ Geobrugg AG, Romanshorn, Switzerland ]
- Svein Halsne [ Geobrugg Nordics, Göteborg, Sweden ]
- Johan Persson [ Geobrugg Nordics, Göteborg, Sweden ]
- Andreas Lanter [ Geobrugg AG, Romanshorn, Switzerland ]
- Helene Lanter [ Geobrugg AG, Romanshorn, Switzerland ]
Date: 2024-09-23
Abstract: Due to the demand for protection systems with a design on the combined load case rockfall and snow pressure, a research project is enrolled for the better understanding of the load distribution in rockfall barriers which are exposed to snow load. Static snowpack forces and dynamic snow slide pressures act over a much larger area and over longer time periods, compared to dynamic rockfall events. Since rockfall barriers are not primarily designed for the former load case, they often must be adapted if a certain snow load is expected. To obtain a first semi-quantitative understanding of the interaction and performance of rockfall barriers with snow pressure and snow slides, a case study has been performed from 2003-2006 in Fieberbrunn, Austria. This resulted in a first design concept, which is still widely used today (Margreth & Roth, 2008). The aim of the measurement campaign in the winter 2023/24 is to verify the findings of the first project, to apply those for different types of rockfall barriers and to determine a fully quantitative load distribution for a given snow load. Four barriers in the Swiss and Austrian Alps are equipped by cameras and load cells to ensure a real-time monitoring of all barriers at any time. For the determination of the load distribution, the behaviour of the individual components such as brakes, posts, ropes, net and anchors are studied. The broad objective is to identify at which snow load adjustments in the individual systems are necessary and which precautions must be taken at best from this point on.
Object ID: ISSW2024_P7.1.pdf
Language of Article: English
Presenter(s):
Keywords: Snow pressure, avalanche dynamics, avalanche, rockfall protection
Page Number(s): 873 - 880
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