Item: Taking Into Account Wet Avalanche Load for the Design of Pylon-like Structures
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Title: Taking Into Account Wet Avalanche Load for the Design of Pylon-like Structures
Proceedings: International Snow Science Workshop 2014 Proceedings, Banff, Canada
Authors:
- Betty Sovilla [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Stefan Margreth [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Mark Schaer [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Emmanuel Thibert [ IRSTEA, UR ETGR, Grenoble, France ]
- Jan-Thomas Fischer [ Austrian Research Centre for Forests (BFW), Innsbruck, Austria ]
- Djebar Baroudi [ Aalto University School of Science and Technology, Aalto, Finland ]
- Christophe Ancey [ Ecole Polytechnique Fédérale de Lausanne, Switzerland ]
Date: 2014-09-29
Abstract: Wet snow avalanches interact with infrastructures around the world but their significance on the structure design is frequently neglected due to the low velocity, which characterize the flow and thus the expected low impact pressures. Recent pressure measurements performed at the Swiss Vallée de la Sionne full-scale test site show that wet avalanche pressures, measured on a 20 m high tower, are considerably higher than those predicted by conventional avalanche engineering guidelines, thus potentially becoming relevant for the design of tower-like structures. In order to understand under which circumstances wet avalanches can become more relevant than their dry counter part and in order to establish simple rules to evaluate the pressure the avalanche exerts on a tower-like object, we analyse pressure and velocity data collected at the Vallée the la Sionne on obstacles of different shape and dimension.
Object ID: ISSW14_paper_P2.23.pdf
Language of Article: English
Presenter(s):
Keywords: avalanche impact pressure, wet-avalanches
Page Number(s): 770-775
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