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| Control the Effect of Wind Loads on Trussed Towers by Using Damping System |
Nagui William Bishay-Girges
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Abstract:
It is very important to consider the effect of lateral loads induced from wind in the design of structures, especially for high-rise structures. The conventional way in limiting the wind drift in high structures was by changing the structural shape of the building to something more rigid and stable to reduce the deformation and increase stability. This paper is based on the study of adding damping to the trussed steel tower to reduce the effect due to wind over a tall structure by using a damping system. This analytical study is performed by modeling the trussed tower. The damping forces generated by the damper located at the ground level are transferred to the structure by the tendons that oppose the wind forces at each level of the structure. The effect of the damping system in controlling the response and the displacement of the structure under wind load was investigated. The dampers are ring spring friction devices consisting of inner and outer ring elements assemble to a form a spring interface. The results showed that the proposed damping system reduces response and displacement of the trussed tower under the influence of wind load significantly.
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