Journal
ADVANCES IN STRUCTURAL ENGINEERING
Volume 21, Issue 5, Pages 783-792Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1369433217732497
Keywords
dynamic characteristics; fast Fourier transform; logarithmic decrement method; random decrement technique; real-time kinematicglobal navigation satellite system; super high-rise building
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This article aims to investigate the dynamic characteristics (e.g. natural frequency and damping ratio) for two super high-rise completed and uncompleted buildings. Real-time kinematic-global navigation satellite system technology is applied to observe the dynamic responses. To improve the positioning accuracy and avoid distortion of the results, a Type 1 Chebyshev high-pass digital filter is used. The natural frequencies and damping ratios of the buildings are determined using the fast Fourier transform analysis and random decrement technique combined with a logarithmic decrement method, respectively. The structural parameters are obtained. The results show that real-time kinematic-global navigation satellite system technology can provide the dynamic responses of super high-rise buildings in an efficient manner and that the dynamic characteristics from field measurements agree well with the results of the numerical simulation.
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