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This paper presents the field measurement results of wind effects on a super-tall building (CITIC Plaza, 391 m high) located in Guangzhou. The field data such as wind speed, wind direction and acceleration responses were simultaneously and continuously recorded from the tall building by a wind and vibration monitoring system during two typhoons. The typhoon-generated wind characteristics including turbulence intensity, gust factor, peak factor, turbulence integral length scale and power spectral density of fluctuating wind speed were presented and discussed. The dynamic characteristics of the tall building were determined based on the field measurements and compared with those calculated from a 3D finite element model of the building. The measured natural frequencies of the two fundamental sway modes of the building were found to be larger than those calculated. The damping ratios of the building were evaluated by the random decrement technique, which demonstrated amplitude-dependent characteristics. The field measured acceleration responses were compared with wind tunnel test results, which were found to be consistent with the model test data. Finally, the serviceability performance of the super-tall building was assessed based on the field measurement results. [ABSTRACT FROM AUTHOR]

The Guangzhou New TV Tower with a height of about 610 m is presently the tallest TV tower in the world. Wind loads and wind effects are the key factors dictating the design of the structure. A wind-resistance study on the tower has thus been made. The entire tower was divided into 19 sections and models for each section were individually wind tunnel tested using the high-frequency balance technique in specially simulated turbulent wind fields. Descriptions of the sectional tower models, the experimental method and the test results are presented in the paper. The test results were then made use of in computing wind induced responses, including tower displacements, accelerations and internal forces, taking modal coupling effects into account. The whipping effects of the antenna on the responses, especially on accelerations were quantified, can be found. The equivalent static wind loads acting on the structure are also provided in the paper. [ABSTRACT FROM AUTHOR]