Abstract：Taking the Wuhan Greenland Center, which is under construction, as the research object, a set of technical methods for monitoring and analyzing the dynamic characteristics of super high-rise buildings are established. Based on the proposed methods, we extract the dynamic characteristics of the building, such as dynamic displacement time series, amplitude and significant frequency during the monitoring period. We analyze the correlation between the displacement and temperature change at the roof of the building based on grey relational analysis method. The results show that the maximum horizontal amplitudes at the top, 400 m height and 300 m height of the building in monitoring direction, are 5.12 mm, 4.22 mm and 3.11 mm respectively, and the standard deviations reach the submillimeter level. The natural frequency of the building is detected as 0.200 2 Hz. The building is also significantly affected by other frequencies because of construction vibration and temperature. For example, the displacement time series of monitoring direction at the roof of the building is still significantly affected by the frequencies of 0.308 2/8.033 9 Hz. The grey relational grade between displacement and temperature time series at the roof of the building is close to 1, which indicates the displacement may be closely related to temperature change.
ZHOU Lü,MA Jun,WEN Xuelin et al. Dynamic Monitoring and Analysis of Super High-Rise Buildings by Ground-Based Radar Interferometry[J]. jgg, 2021, 41(3): 301-307.
