Landslide Analysis of Historical Urban Walls: Case Study of Volterra, Italy

This work arises from the evidences of recent collapses historical urban walls. These events, mainly occurred after severe rainfalls, recalled attention on vulnerability these infrastructures. Specific evaluation models which take into account role moisture inside walls are not frequent in literature. The problem is difficult to treat many practical cases due extension and variability their geometry mechanical features. integrity investigated throughout analysis a set vertical sections. Risk scenarios rainfall events analyzed. At this scope, four limit states proposed determine both collapse serviceability conditions. combined risk obtained by treating single-risk analysis. results compared with those finite element method models. applied relevant case study Volterra retrospective section that collapsed January 2014 other