基于能量法的調(diào)諧黏性質(zhì)量阻尼器地震響應預測式研究
發(fā)布時間:2018-07-16 10:25
【摘要】:建立附加調(diào)諧黏性質(zhì)量阻尼器的多層鋼框架結構,簡要分析其力學模型。建立能量平衡方程,并給出主結構彈性振動能、阻尼器彈性振動能、阻尼器黏性阻尼耗能的表達式,推導出剪力系數(shù)和層間位移的預測式。提出質(zhì)量阻尼能量分散系數(shù)和黏性阻尼能量分散系數(shù)的簡化計算公式。利用時程分析法驗證了預測式和簡化計算公式的準確性。利用位移降低率和剪力降低率的不同線性組合得出不同使用要求下的阻尼器優(yōu)化置放量。結果表明:(1)簡化計算公式能夠近似地計算能量分散系數(shù);(2)本文的預測式包絡時程分析法的結果,能夠比較準確地預測結構的地震反應;(3)當采用優(yōu)化分布規(guī)律,質(zhì)量比為0.2,剛度比為0.8,阻尼器阻尼比為0.8時,各種使用要求下的減震效果最佳。
[Abstract]:A multi-layer steel frame structure with tuned viscous mass dampers is established and its mechanical model is briefly analyzed. A simplified formula of mass damping energy dispersion coefficient and viscous damping energy dispersion coefficient is presented. The accuracy of the prediction formula and the simplified formula is verified by time history analysis. According to the different linear combination of displacement reduction rate and shear force reduction rate, the optimal placement quantity of dampers with different application requirements is obtained. When the mass ratio is 0.2, the stiffness ratio is 0.8, and the damper damping ratio is 0.8, the damping effect is the best under various application requirements.
【作者單位】: 江蘇科技大學土木工程與建筑學院;江蘇筑森建筑設計股份有限公司;
【基金】:江蘇科技大學科研基金項目(1012920603)
【分類號】:TU352.1
[Abstract]:A multi-layer steel frame structure with tuned viscous mass dampers is established and its mechanical model is briefly analyzed. A simplified formula of mass damping energy dispersion coefficient and viscous damping energy dispersion coefficient is presented. The accuracy of the prediction formula and the simplified formula is verified by time history analysis. According to the different linear combination of displacement reduction rate and shear force reduction rate, the optimal placement quantity of dampers with different application requirements is obtained. When the mass ratio is 0.2, the stiffness ratio is 0.8, and the damper damping ratio is 0.8, the damping effect is the best under various application requirements.
【作者單位】: 江蘇科技大學土木工程與建筑學院;江蘇筑森建筑設計股份有限公司;
【基金】:江蘇科技大學科研基金項目(1012920603)
【分類號】:TU352.1
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