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[1]LUO Yuan,YANG Jiang,FAN Tao.Analysis of the Structural Response of a Super High-rise Building in Wuhan to the Hualian,Taiwan MS6.9 Earthquake[J].Journal of Seismological Research,2024,47(03):452-460.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0042 ]

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Analysis of the Structural Response of a Super High-rise Building in Wuhan to the Hualian,Taiwan M_S6.9 Earthquake

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 47 Number of periods: 2024 03 Page number: 452-460 Column: 综述 Public date: 2024-05-01

Title:: Analysis of the Structural Response of a Super High-rise Building in Wuhan to the Hualian,Taiwan M_S6.9 Earthquake

Author(s):: LUO Yuan¹; YANG Jiang¹; 2; 3; FAN Tao¹; 2; 3; (1.Institute of Seismology,China Earthquake Administration,Wuhan 430071,Hubei,China;2.Wuhan Institute of Seismic Scientific Instruments Co.Ltd.,Wuhan 430071,Hubei,China;3.Engineering Technology Research Center for Earthquake Monitoring and Early Warning D

Keywords:: the Hualian; Taiwan earthquake; modal frequency identification; the mutual power spectrum method; the stochastic sub-space method; the structural response observation array

CLC:: TU311.3

DOI:: 10.20015/j.cnki.ISSN1000-0666.2024.0042

Abstract:: Wuhan city is located at the junction of the Jianghan Fault Depression and the Southeastern Hubei Fold Belt,which is often affected by far-field earthquakes.At 14:00 on September 18,2022,a 6.9-magnitude earthquake occurred in Hualian County,Taiwan Province of China.The structural dynamic response of a super high-rise building to the Hualian earthquake was completely recorded at 4 monitoring points in this building in Wuhan,more than 1000 km away from the epicenter.In order to study the impact of the earthquake on the building structure,the anisotropic PGA amplification effect,the Fourier spectrum and the response spectrum are analyzed.The mutual power spectrum method and the stochastic subspace identification method based on covariance are used respectively to identify the first-order modes of the structure in the frequency domain and the time domain.The results show that the peak acceleration of the structure has a significant amplification effect with the increase of the height of the floor,and the maximum amplification factor is 7.322.The peak value of the Fourier spectrum is concentrated at 0.275 Hz and 1.171 Hz.The response spectrum of acceleration response is much smaller than the design spectrum of the Ⅵ-degree fortification earthquake in this area.The frequencies of the first-order modes identified by the two methods are generally the same,and are close to the values of numerical simulation.It is believed that the Hualian,Taiwan M amplification effect,the Fourier spectrum and the response spectrum are analyzed.The mutual power spectrum method and the stochastic subspace identification method based on covariance are used respectively to identify the first-order modes of the structure in the frequency domain and the time domain.The results show that the peak acceleration of the structure has a significant amplification effect with the increase of the height of the floor,and the maximum amplification factor is 7.322.The peak value of the Fourier spectrum is concentrated at 0.275 Hz and 1.171 Hz.The response spectrum of acceleration response is much smaller than the design spectrum of the Ⅵ-degree fortification earthquake in this area.The frequencies of the first-order modes identified by the two methods are generally the same,and are close to the values of numerical simulation.It is believed that the Hualian,Taiwan b>S6.9 earthquake did not cause damage to the structure of the case building.

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Last Update: 2024-05-01