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减震结构基于模态阻尼耗能的附加有效阻尼比计算

Calculation of additional effective damping ratio of structures based on modal damping energy dissipation

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【作者】 翁大根李超胡岫岩罗浩张瑞甫

【Author】 Weng Dagen;Li Chao;Hu Xiuyan;Luo Hao;Zhang Ruifu;Tongji University;

【机构】 同济大学

【摘要】 快速准确估计附加有效阻尼比对于减震结构的设计过程具有提高工效意义。提出一种基于有效模态阻尼耗能概念的附加有效阻尼比计算方法,其物理意义明确,充分考虑了有效阻尼比的时变特性,且具有计算简单、精度高等优点。结合实际工程案例,对该方法计算值的精确性进行了验证,并与国家"抗规"方法进行了对比。

【Abstract】 Estimating additional damping ratio of the damping structure quickly and accurately can improve work efficiency for the design process. In this study,a calculation method of additional damping ratio is proposed based on the conception of effective modal damping energy dissipation,which has an explicit physical meaning. The time varying characteristics of the effective damping ratio are considered in this method. Furthermore,the advantage of this method is its simplicity and high accuracy of calculation. The accuracy of the method proposed in this paper has been proved by a practical case and a comparison between this method and the method proposed in seismic code is conducted.

【基金】 国家自然科学基金(51308418,51478357)
  • 【文献出处】 土木工程学报 ,China Civil Engineering Journal , 编辑部邮箱 ,2016年S1期
  • 【分类号】TU352.1
  • 【被引频次】35
  • 【下载频次】706
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