Ambient Vibration Tests of a Steel Footbridge |
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Authors: | Alemdar Bayraktar Ahmet Can Altuni?ik Bar?? Sevim Temel Türker |
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Affiliation: | 1.Department of Civil Engineering,Karadeniz Technical University,Trabzon,Turkey |
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Abstract: | The paper presents analytical and experimental modal analysis of a steel footbridge for modal parameter identification. 3D
finite element model is established for the steel footbridge based on the design drawing and modal parameters are obtained
from deformed configurations. The field test is carried out by ambient vibration test under human walking excitation. Both
Peak Picking method in the frequency domain and the Stochastic Subspace Identification method in the time domain are used
for the output-only modal identification. From the study, good agreement is found between mode shapes, but some differences
in the natural frequencies and analytical frequencies are bigger. |
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