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http://dx.doi.org/10.12989/sss.2012.10.4_5.393

Operational modal analysis for Canton Tower  

Niu, Yan (Center for Sensor Systems (ZESS), University of Siegen)
Kraemer, Peter (Woelfel Beratende Ingenieure)
Fritzen, Claus-Peter (Center for Sensor Systems (ZESS), University of Siegen)
Publication Information
Smart Structures and Systems / v.10, no.4_5, 2012 , pp. 393-410 More about this Journal
Abstract
The 610 m high Canton Tower (formerly named Guangzhou New Television Tower) is currently considered as a benchmark problem for structural health monitoring (SHM) of high-rise slender structures. In the benchmark study task I, a set of 24-hour ambient vibration measurement data has been available for the output-only system identification study. In this paper, the vector autoregressive models (ARV) method is adopted in the operational modal analysis (OMA) for this TV tower. The identified natural frequencies, damping ratios and mode shapes are presented and compared with the available results from some other research groups which used different methods, e.g., the data-driven stochastic subspace identification (SSI-DATA) method, the enhanced frequency domain decomposition (EFDD) algorithm, and an improved modal identification method based on NExT-ERA technique. Furthermore, the environmental effects on the estimated modal parameters are also discussed.
Keywords
operational modal analysis (OMA); Canton Tower, vector autoregressive models (ARV) method; environmental effects; structural health monitoring (SHM);
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