VIBRATION CHARACTERISTICS OF A CABLE-STAYED FOOTBRIDGE VIA MODAL TESTING
The dynamics of footbridges needs an adequate individuation of modal properties, in the perspective of design methodologies for reducing vibrations. Therefore, modal testing after construction can be an important tool in updating and validation of FE models. In this work ambient vibration testing has been applied to the estimation of modal properties of the Forchheim Cable-Stayed Footbridge. The recorded data have been analysed through Frequency Domain Decomposition (FDD) technique. A FE model has been developed and updated on the basis of experimental data. In addition, a numerical simulation has been performed, with the aim of showing differences in dynamic response of the bridge when the human mass is considered, with respect to the usually adopted methods in which human mass is neglected in the calculation. In fact, for light structures, such as the analyzed footbridge, service live loads can be of the same order of dead loads.
Vibration Footbridge dynamics Modal testing Dynamic properties.
P. Clemente G. Ricciardi F. Saitta
Research Structural Engineer, ENEA, Casaccia Research Centre, Rome, Italy Dept. of Civil Engineering, University of Messina, Messina, Italy
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）