基于能量法的调谐黏性质量阻尼器地震响应预测式研究

发布时间：2018-07-16 10:25

【摘要】：建立附加调谐黏性质量阻尼器的多层钢框架结构,简要分析其力学模型。建立能量平衡方程,并给出主结构弹性振动能、阻尼器弹性振动能、阻尼器黏性阻尼耗能的表达式,推导出剪力系数和层间位移的预测式。提出质量阻尼能量分散系数和黏性阻尼能量分散系数的简化计算公式。利用时程分析法验证了预测式和简化计算公式的准确性。利用位移降低率和剪力降低率的不同线性组合得出不同使用要求下的阻尼器优化置放量。结果表明:(1)简化计算公式能够近似地计算能量分散系数;(2)本文的预测式包络时程分析法的结果,能够比较准确地预测结构的地震反应;(3)当采用优化分布规律,质量比为0.2,刚度比为0.8,阻尼器阻尼比为0.8时,各种使用要求下的减震效果最佳。
[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.
【作者单位】：江苏科技大学土木工程与建筑学院;江苏筑森建筑设计股份有限公司;
【基金】：江苏科技大学科研基金项目(1012920603)
【分类号】：TU352.1

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