Structural Health Monitoring of a steel truss railway bridge studying its low frequency response

Abstract In the framework of direct Structural Health Monitoring approaches, this paper presents a low frequency range analysis performed on steel truss bridge designed in 1946 and built up Northern Italy. The is instrumented with permanent structural health monitoring system, that guarantees continuous flux data information from heterogeneous set sensors. analysis, static quasistatic responses are considered. These experimental merged analogous outputs obtained numerical simulations, FE models representative actual bridge, purpose identifying damage‐sensitive indexes. Simulations considering healthy structure modelling different damage scenarios. consists construction regressive model able to estimate sensor output starting environmental measurements, primary reduce effect temperature over measured response. This procedure allows relate damages simulated by means real data, so rules can effectively defined.