Research On Wind-induced Response For Inner Suspended And Outer Guyed Holding Poles

The inner suspended and outer guyed holding pole is a kind of special hoisting machine.It is widely used in the electric industry. The holding pole has a large slenderness ratio and a special form of constraints, so it is necessary to analyse the wind-induced vibration response of the structure. Based on linear filtering method, the fluctuating wind load is obtained by MATLAB, and then it is applied on the model of the holding pole established by ANSYS. The characteristics of the wind-induced vibration of the holding pole are revealed and the dynamic response of the holding pole in working and nonworking status is given. These results can provide reference for the design and use of holding poles.The modal analysis of the pole shows that the structure has the same deform shape for the same order mode. As the inclination angle of the holding pole rises, the natural frequency of each step increases. With the increase of the outer guy angle, the natural frequency of each step decreases. With the increase of the supporting rope angle, the natural frequency of each step changes a little.In the working status, as the inclination angle of the holding pole rises, the axial force of the outer guy and the supporting rope adds, the maximum stress and displacement increase, and the wind vibration coefficient of different heights decreases. With the increase of the outer guy angle, the axial force of the outer guy and the supporting rope adds. The maximum stress and displacement increase while the wind vibration factor of different heights decreases. When the supporting rope angle rises, the axial force of the outer guy and the supporting rope raises. The maximum stress and displacement increase while the wind vibration coefficient of different heights decreases.In the nonworking status, as the inclination angle of the holding pole rises, the maximum stress and displacement increase, and the wind vibration factor of different heights decreases. With the increase of the outer guy angle, the maximum stress and displacement increase, and the wind vibration factor of different heights decreases. With the rise of the supporting rope angle, the maximum stress and displacement decrease, and the wind vibration factor of different heights changes a little.