Nachweis der Ermüdungssicherheit von Brücken [Teil 1]

Fatigue design of bridges - Part 1: Motive, intent and measuring concept of the Swiss monitoring-study "Railway Bridge Eglisau.

Due to increasing requirements of modern railways (higher load per axle, higher train frequencies etc.) higher loads are drawn on railway bridges in the present. A pilot study has been carried out to capture non-intrusive static and dynamic load tests on a railway bridge at Eglisau, Switzerland. The tests have provided reliable data needed to produce a meaningful report presenting the current and predicted structural safety, serviceability and structural fatigue of the bridge. The single track railway bridge provides limited access when in operation. Therefore, a fully automated construction monitoring system (swissMon) was installed onto the bridge to continuously supply remote measurement data throughout the monitoring period. The system was used to program multiple sensors and sensor types to record measurements at regular time intervals or to trigger the sensors upon the passing of a train. The data obtained from swissMon provided the fundamental reliable information required to carry out further analysis and modeling to support the expert engineers' structural assessment of the single track railway bridge at Eglisau.