减震器响应与框架核心筒结构位移相关性研究

Research on Correlation between Energy-dissipation Device Response and Frame-core Tube Structure Displacement

当前使用消能减震设计的结构越来越多,其范围也不再局限于多层结构,表现出从多层结构向高层、超高层的变化趋势。然而,在实际工程设计中可供设计人员使用的经验和理论不足。往往依赖多层结构中的经验和结构层间位移角进行迭代布置,不仅耗时费力且效果不佳。本文着眼于高层框筒结构中的消能减震装置,选取普遍使用的两种减震装置和三种布置形式,从减震结构单元的角度出发,对具体布置形式中减震装置变形进行分解。通过算例,对理论分解进行验证,分析各变形沿结构高度的分布情况。最后通过忽略次要变形,得出了减震装置响应与结构变形间的联系。

At present,there are more and more structures are designed using energy dissipation and vibration reduction devices,and the scope is no longer limited to multi-story structures,showing a trend of changing from multi-story structures to high-rise and super high-rise buildings.However,insufficient experience and theoretical support are available to designers in practical engineering.Designers often rely on experience in multistory structures and the inter-story displacement angle to use iterative layout,which is not only time-consuming,labor-intensive but also has poor results.In this paper,two commonly used damping devices and three layouts were selected and discussed with a focus on the energy dissipation and damping devices in the high-rise framecore tube structures.From the perspective of the damping structure unit,deformations of the damping device in the specific layouts were decomposed.A numerical simulation is then used to verify the theoretical decomposition and to analyze the distribution of deformations along the structure height.Finally,by ignoring the secondary deformation,the relationship between the energy dissipation devices response and the structural deformation is obtained.