Debris flow impact forces on bridge superstructures
Abstract
Bridges form an essential part of the infrastructure system in developed countries, especially in the mountainous regions. However, bridges in those areas are exposed to various Alpine hazards, e.g. rockfalls, avalanches or mudslides. Debris flow impacts play a substantial role in the collapse of bridges in those regions. In recent years and decades, the horizontal impact forces for the bridge piers and abutments have been determined by miniaturized and real-size tests but debris flows can also exert forces on the superstructure of bridges, such as horizontal impact forces, upward pushing forces and friction. Total collapses or deteriorations of bridge superstructures after torrential events can be numerous observed in those regions. Partly similar effects on superstructures are e.g. known for ship impacts or tsunami waves. There is no basis for the design of the superstructure of bridges exposed to debris flow impacts. Within the scope of this project, the forces on the superstructure of bridges due to debris flow impacts are to be investigated experimentally. In contrast to the pier and abutment impacts, forces that push upwards and friction must be investigated in addition to the pure horizontal impact forces.
keywords debris flows bridge superstructures impact forces pyhsical modelling experiments
Publikationen
Project staff
Christian Scheidl
Priv.-Doz. Dipl.-Ing. Dr.nat.techn. Christian Scheidl
christian.scheidl@boku.ac.at
Tel: +43 1 47654-87116
Project Leader
01.02.2020 - 31.01.2024
Caroline Friedl
Dipl.-Ing. Caroline Friedl
caroline.friedl@boku.ac.at
Tel: +43 1 47654-87115
Project Staff
01.06.2021 - 31.01.2023
Susanna Wernhart
Dipl.-Ing. Susanna Wernhart
susanna.wernhart@boku.ac.at
Tel: +43 1 47654-87122
Project Staff
01.02.2020 - 31.01.2024