Recursive variational mode decomposition enhanced by orthogonalization algorithm for accurate structural modal identification

XQ Shang, TL Huang, HP Chen, WX Ren… - Mechanical Systems and …, 2023 - Elsevier
Modal identification is critical for structural condition monitoring. Variational mode
decomposition (VMD) has been widely applied to identify modal parameters and has …

Autoregressive spectrum-guided variational mode decomposition for time-varying modal identification under nonstationary conditions

XJ Yao, TH Yi, CX Qu - Engineering Structures, 2022 - Elsevier
Modal identification is an important research subject in structural health monitoring. It is a
mature subject for modal identification of time-invariant and stationary conditions. Because …

Evaluation of modal properties of high-rise buildings under severe typhoon conditions using correlation function-based modal identification methods

M Sun, Q Li - Journal of Wind Engineering and Industrial …, 2022 - Elsevier
The correlation function-based methods have been widely in the operational modal analysis
of engineering structures. However, the understanding of the advantages and …

Modal identification of high-rise buildings by combined scheme of improved empirical wavelet transform and Hilbert transform techniques

P Wei, Q Li, M Sun, J Huang - Journal of Building Engineering, 2023 - Elsevier
Recently, the empirical wavelet transform technique has attracted much attention due to its
advantage of dealing with non-stationary and nonlinear signals. For empirical wavelet …

Automated operational modal analysis based on long‐term records: A case study of Milad Tower structural health monitoring

A Sadeqi, A Esfandiari, M Sanayei… - Structural Control and …, 2022 - Wiley Online Library
Structural modal identification is time‐consuming for large‐scale structures with continuous
data recordings and long‐term data collections. This paper proposes an automated three …

Investigation of time-varying natural frequencies of high-rise buildings under harsh excitations using a high-resolution combined scheme

M Sun, Q Li, Y Li - Journal of Building Engineering, 2022 - Elsevier
High-rise buildings subjected to harsh excitations like typhoons or earthquakes usually
present nonlinear features and exhibit time-varying behavior of structural modal properties …

Identification of modal parameters from non-stationary responses of high-rise buildings

L Zhi, F Hu, Q Li, Z Hu - Advances in Structural Engineering, 2021 - journals.sagepub.com
A key issue in the control, health monitoring, and condition assessment of civil structures is
the estimation of structural modal parameters based on measured structural responses …

Refined mathematical models for across-wind loads of rectangular tall buildings with aerodynamic modifications

Y Li, C Li, QS Li, YG Li, FB Chen - International Journal of Structural …, 2021 - World Scientific
This paper aims to systematically study the across-wind loads of rectangular-shaped tall
buildings with aerodynamic modifications and propose refined mathematic models …

Modal identification technologies for high-rise buildings under non-stationary excitations

MM Sun, QS Li, K Zhou, XL Han - International Journal of Structural …, 2022 - World Scientific
For high-rise buildings subjected to typhoon or earthquake actions, the excitations are likely
non-stationary, which inevitably violates the stationary assumption that is generally adopted …

Output-Only Modal Identification Based on Auto-regressive Spectrum-Guided Symplectic Geometry Mode Decomposition

P Zhan, X Qin, Q Zhang, Y Sun - Journal of Vibration Engineering & …, 2024 - Springer
Purpose The purpose of this paper is to propose a novel output-only structural modal
identification approach based on an improved symplectic geometry mode decomposition …