A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Wind-induced response of a large cantilevered roof
The subject of this study is to clarify aerodynamic properties of a large cantilevered roof. We conducted free vibration experiments in order to investigate effects of various parameters such as mass, pitch angle, and damping ratio to wind-induced vibration of the roof. In the experiments, we have found that the roof hardly vibrated at its natural frequency until a certain critical wind velocity, then a flutter-like vibration occurred and a sharp peak at frequency lower than the natural frequency appeared in a spectrum of the vibration. In the light of forced oscillation experiments, the frequency of the sharp peak was the natural frequency of the roof lowered by the positive aerodynamic stiffness. The lowered natural frequency synchronized with the frequency of the vortex shedding from the leading edge of the roof, which causes a negative damping effect of unsteady wind force.
Wind-induced response of a large cantilevered roof
The subject of this study is to clarify aerodynamic properties of a large cantilevered roof. We conducted free vibration experiments in order to investigate effects of various parameters such as mass, pitch angle, and damping ratio to wind-induced vibration of the roof. In the experiments, we have found that the roof hardly vibrated at its natural frequency until a certain critical wind velocity, then a flutter-like vibration occurred and a sharp peak at frequency lower than the natural frequency appeared in a spectrum of the vibration. In the light of forced oscillation experiments, the frequency of the sharp peak was the natural frequency of the roof lowered by the positive aerodynamic stiffness. The lowered natural frequency synchronized with the frequency of the vortex shedding from the leading edge of the roof, which causes a negative damping effect of unsteady wind force.
Wind-induced response of a large cantilevered roof
Kawai, H. (author) / Yoshie, R. (author) / Wei, R. (author) / Shimura, M. (author)
1999
13 Seiten, 2 Quellen
Conference paper
English
Wind-induced response of a large cantilevered roof
| British Library Conference Proceedings | 1999
Maximum Wind Load Effects on a Large-Span Cantilevered Roof
| British Library Online Contents | 2005
Characteristics of wind pressures on large cantilevered roofs: effect of roof inclination
| Online Contents | 2002
Predicting dynamic wind loading on cantilevered canopy roof structures
| Online Contents | 2000
Predicting dynamic wind loading on cantilevered canopy roof structures
| Tema Archive | 2000