ABSTRACT
Natural hazards such as floods, landslides, debris flows, earthquakes, and fires cause many disasters. In Switzerland, from 1972 to 2021, damage from floods, landslides, debris flows, and rockfalls amounted to approximately CHF 300 million annually. Climate change, settlement development, and increasing land use are some of the primary triggers of natural hazards. Permanent landslides generally have a lower probability of producing catastrophic events, but they can lead to structural damage to buildings and infrastructures. The aim of this work is the vulnerability analysis of selected building typologies exposed to the action of permanent landslides. Different building locations on the landslide body were chosen, after making simplifications, and then a vulnerability analysis was carried out on each one to define intensity and resistance parameters. The methodology makes it possible to obtain vulnerability curves depending on the type of building and its position in the landslide body. The method was applied to four case studies in southwest Switzerland: Hohberg Landslide, Converney-Taillepied Landslide, Pont Bourquin Landslide, and La Frasse Landslide. The methodology can be seen as validated since the results of the four case studies are within the range of values used to construct the vulnerability curves.
