Behaviour and design of civil engineering structures exposed to dynamic loads: the case of snow avalanches defence works

Abstract

This article proposes an easy accessible synthesis of main principles related to the physical behaviour of civil engineering structures impacted by snow avalanches. Improving knowledge of pressure due to an avalanche on a civil structure is an essential step to design resistant protective structures. In situ experimental devices using structures as macro-sensors is an original and innovative way that complements the existing research approaches mainly based on hydrodynamics and fluid mechanics principles. General principles for design and building for rigid civil engineering works are presented. Finally, operational recommendations are proposed to improve the dynamic loads and therefore global risk assessments.