Modal Response Measurement and Analysis of Xiamen Fortune Center Structural Array

DOI

10.2991/978-94-6463-404-4_35How to use a DOI?

Keywords

High-rise building; Modal identification; Vibration mode

Abstract

The modal parameters, including frequency and vibration mode, obtained through measuring and analyzing the vibrations of high-rise buildings under different sources of vibration, hold significant importance in understanding the overall deformation mode and seismic performance of the structures. Using measured seismic, air gun, and noise data, this paper analyzed the displacement and natural frequency of various levels within the building structure, including basement level 5, level 4, level 14, level 24, level 30, and level 42. The analysis was conducted based on the structural array, which consisted of a wideband seismic recorder installed on the Xiamen Fortune Center. The first four periods, damping ratio, and vibration mode of the structure were determined by utilizing the cross-power spectral density of different vibration sources. The findings demonstrate that the air gun source can detect the high-order modes of the structure, while the noise source can identify the low-order modes. Combining the two sources produces results comparable to those obtained from seismic signal analysis. The results indicate that the air gun source, when combined with noise and utilized in conjunction with the structure array, can successfully identify the first four modes of the structure. This modal analysis method introduces a novel non-destructive source detection approach.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Qin Wang
PY  - 2024
DA  - 2024/04/29
TI  - Modal Response Measurement and Analysis of Xiamen Fortune Center Structural Array
BT  - Proceedings of the 2024 3rd International Conference on Structural Seismic Resistance, Monitoring and Detection (SSRMD 2024)
PB  - Atlantis Press
SP  - 354
EP  - 366
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-404-4_35
DO  - 10.2991/978-94-6463-404-4_35
ID  - Wang2024
ER  -