42524 2017 eng 212 224 1 5 bookpart Springer International Publishing 1 -- -- -- This paper describes the experimental calibration of an existing Wiegmann–Polonceau roof truss based on modal parameters. Dynamic tests allowed the determination of the natural frequencies and mode shapes of the global truss and of individual truss members. The global and local modal configurations as well as coupled vibration of truss members are discussed. In addition, as truss members are axially loaded, the effect of stress stiffening on the modal parameters is considered. Moreover, several finite element models with different modelling assumptions for the details of the connections and member geometrical characteristics such as gusset plates and turnbuckles were developed. A suitable numerical model was chosen to represent the truss structural behavior. This paper focuses on the local measurement and analysis strategies applied to single truss members. The possibility of using a local analysis method, namely methods that consider individual members as part of a structure, is demonstrated to assess the behavior of the global truss structure. The comparison of the results after calibration reveals a very good correlation between the experimentally identified and numerically estimated modal parameters of the historic truss. Experimental Vibration Analysis for Civil Structures: Testing, Sensing, Monitoring, and Control 978-3-319-67443-8 10.1007/978-3-319-67443-8_18 2366-2557 24.01.2019 Thi Mai Hoa Luong W. Lorenz R.G. Rohrmann V. Zabel Samir Said eng uncontrolled Modal parameters eng uncontrolled Axial force eng uncontrolled Dynamic test eng uncontrolled Finite element method eng uncontrolled Truss structures Ingenieurbau Verlagsliteratur Datei im Netzwerk der BAM verfügbar ("Closed Access")