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Experimental and analytical study of galloping of a slender tower
https://orcid.org/0000-0002-7349-0448
HighlightsFull-scale and wind tunnel experiments are conducted to study wind-induced vibration of a type of slender tower.An analytical model is formulated based on the experiments to study the galloping onset of the slender tower.The coupling of galloping in two orthogonal directions is evaluated.The dependence of galloping onset wind speed on damping is evaluated.The dependence of galloping onset on wind speed shear is evaluated.
AbstractMany previous studies have been conducted to investigate wind-induced galloping of slender structures or structural members. While some recent studies have examined the particular problem of galloping involving coupling between vibration components about the principal axes, few occurrences of such vibrations of full-scale structures have been reported. This paper presents a comprehensive investigation that incorporates full-scale and wind tunnel experiments and an analytical formulation to study the galloping oscillation of a type of slender tower. The full-scale and wind tunnel experiments were conducted to assess the characteristics of the oscillations, their correlation with the wind characteristics, as well as the core parameters that influence the interaction between the tower and the wind. Based on the results from the experiments, a state-space model for coupled galloping of slender towers is formulated. This model enables the prediction of the susceptibility of a slender tower to galloping instability through an evaluation of the net damping resulting from the wind-structure interaction. The tower subjected to monitoring in the full-scale study is used as an example structure in an illustrative application of the analytical model.
Experimental and analytical study of galloping of a slender tower
https://orcid.org/0000-0002-7349-0448
HighlightsFull-scale and wind tunnel experiments are conducted to study wind-induced vibration of a type of slender tower.An analytical model is formulated based on the experiments to study the galloping onset of the slender tower.The coupling of galloping in two orthogonal directions is evaluated.The dependence of galloping onset wind speed on damping is evaluated.The dependence of galloping onset on wind speed shear is evaluated.
AbstractMany previous studies have been conducted to investigate wind-induced galloping of slender structures or structural members. While some recent studies have examined the particular problem of galloping involving coupling between vibration components about the principal axes, few occurrences of such vibrations of full-scale structures have been reported. This paper presents a comprehensive investigation that incorporates full-scale and wind tunnel experiments and an analytical formulation to study the galloping oscillation of a type of slender tower. The full-scale and wind tunnel experiments were conducted to assess the characteristics of the oscillations, their correlation with the wind characteristics, as well as the core parameters that influence the interaction between the tower and the wind. Based on the results from the experiments, a state-space model for coupled galloping of slender towers is formulated. This model enables the prediction of the susceptibility of a slender tower to galloping instability through an evaluation of the net damping resulting from the wind-structure interaction. The tower subjected to monitoring in the full-scale study is used as an example structure in an illustrative application of the analytical model.
Experimental and analytical study of galloping of a slender tower
https://orcid.org/0000-0002-7349-0448
HighlightsFull-scale and wind tunnel experiments are conducted to study wind-induced vibration of a type of slender tower.An analytical model is formulated based on the experiments to study the galloping onset of the slender tower.The coupling of galloping in two orthogonal directions is evaluated.The dependence of galloping onset wind speed on damping is evaluated.The dependence of galloping onset on wind speed shear is evaluated.
AbstractMany previous studies have been conducted to investigate wind-induced galloping of slender structures or structural members. While some recent studies have examined the particular problem of galloping involving coupling between vibration components about the principal axes, few occurrences of such vibrations of full-scale structures have been reported. This paper presents a comprehensive investigation that incorporates full-scale and wind tunnel experiments and an analytical formulation to study the galloping oscillation of a type of slender tower. The full-scale and wind tunnel experiments were conducted to assess the characteristics of the oscillations, their correlation with the wind characteristics, as well as the core parameters that influence the interaction between the tower and the wind. Based on the results from the experiments, a state-space model for coupled galloping of slender towers is formulated. This model enables the prediction of the susceptibility of a slender tower to galloping instability through an evaluation of the net damping resulting from the wind-structure interaction. The tower subjected to monitoring in the full-scale study is used as an example structure in an illustrative application of the analytical model.
Experimental and analytical study of galloping of a slender tower
Zuo, Delong (author) / Wu, Liang (author) / Smith, Douglas A. (author) / Morse, Stephen M. (author)
Engineering Structures ; 132 ; 44-60
2016-11-11
17 pages
Article (Journal)
Electronic Resource
English
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