Abstract
A variety of methods have been applied to reduce the effect of the wind-induced vibration of a high-rise building as the excessive wind-induced vibration at the top of a high-rise building can cause physical and psychological discomfort to the user or the residents. For structural engineers, the most effective approach to control the wind-induced responses of high-rise buildings would be to control the stiffness or natural frequency of the building. This paper presents a practical design model to control the wind-induced responses of a high-rise building. In the model, the stiffness of a high-rise building is maximized to increase the natural frequency of the building by the resizing algorithm. The proposed design model is applied to control the wind-induced vibration of an actual 37-storey building during the initial stage of its structural design.
Highlights
Buildings can be vibrated by earthquakes and wind
A practical design model based on the resizing algorithm is presented to control of the wind-induced responses of a high-rise building
To reduce the windinduced responses, the stiffness of a high-rise building is maximized to increase the natural frequency of the building by the resizing algorithm
Summary
Buildings can be vibrated by earthquakes and wind. The duration of earthquake-induced vibration is relatively short and related to the safety of building structures such as the risk of collapse. Tallin and Ellingwood (1984), Chan and Chui (2006), and Chan et al (2009) have proven that the wind-induced response can be reduced by increasing the natural frequency of a building As such, it would be necessary for structural engineers to have a practical method to increase the stiffness or natural frequency of a high-rise building without a significant increase in the structural weight or construction cost. A practical design method based on the resizing algorithm, which does not require an iterative structural analysis, is presented to control the windinduced responses of a high-rise building. The proposed design method is applied to control the wind-induced vibration of an actual 37-storey building during the initial stage of its structural design
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