Research on optimum damping parameters of an energy dissipation structure based on the support stiffness

被引：0
|
作者：
Lan X. [1 ,2 ]
Pan W. [1 ,2 ]
Bai Y. [1 ,2 ]
Zhang L.-F. [1 ,2 ]
Yu W.-Z. [1 ,2 ]
机构：
[1] Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming
[2] Yunnan Earthquake Engineering Research Institute, Kunming
来源：
Pan, Wen (panwen@vip.sina.com) | 2018年 / Tsinghua University卷 / 35期
关键词：
Energy dissipation; Fixed-point theory; Optimal damping ratio; Practical damping system; Support stiffness; Transfer function;
D O I：
10.6052/j.issn.1000-4750.2017.11.0810
中图分类号：
学科分类号：
摘要：
A practical mechanical model of damping system considering the stiffness of the connection element was proposed, based on the research of mechanical models of traditional energy dissipation system. Firstly, the transfer function and frequency characteristic of the practical damping system were derived using the Laplace transform and the Fourier transform of the mathematical method. Subsequently, the fixed-point theory was used in the frequency response curves to examine the frequency characteristic. The results showed that the fixed-point of the frequency response curves was the theoretical lowest point the curves' peak value could reach. The optimal damping ratio and the minimum peak value of the frequency response curves were derived. Finally, the existence of the optimal damping ratio was verified by using a single degree of freedom system. A recommended range of the support stiffness coefficient was provided. Moreover, the importance of the support stiffness coefficient in energy dissipation structure designing was revealed by studying a project example. © 2018, Engineering Mechanics Press. All right reserved.
引用
收藏
页码：208 / 217
页数：9
相关论文
共 24 条
  • [1] GB 50011-2010, Code for seismic design of buildings, (2010)
  • [2] JGJ 297-2013, Technical specification for seismic energy dissipation of building, (2013)
  • [3] Weng D., Zhang C., Lu X., Et al., Practical design procedure for a energy-dissipated structure with viscous dampers, Journal of Vibration and Shock, 31, 21, pp. 80-88, (2012)
  • [4] Wang Q., Gan G., Calculation of effective additional damping ratio of energy dissipation structure based on linear equivalent method, Journal of Building Structures, 33, 11, pp. 46-52, (2012)
  • [5] Wu Z., Xue Y., Wang C., Et al., Research on additional damping ratio calculation methods under frequent earthquake, Journal of Building Structures, 34, 12, pp. 19-25, (2013)
  • [6] Lu W., Liu W., Wang T., Calculation method for additional equivalent damping ratio of energy dissipation structure, Journal of Nanjing University of Technology (Natural Science Edition), 31, 1, pp. 97-100, (2009)
  • [7] He W., Chen C., Liu Y., Et al., Comparative study of equivalent damping ratio calculation methods for a structure with viscous dampers, Structural Engineers, 32, 1, pp. 10-16, (2016)
  • [8] Wang W., Yan W., Peng L., Study on the additional damping ratio provided by lead dampers and its design values under different seismic levels, Engineering Mechanics, 31, 3, pp. 173-180, (2014)
  • [9] Wu K., Tao Z., Wei G., Et al., Calculation of the additional damping ratio of buckling-restrained brace structure and its variation under earthquake, Journal of Vibration and Shock, 35, 2, pp. 146-152, (2016)
  • [10] Lee S.H., Min K.W., Hwang J.S., Et al., Evaluation of equivalent damping ratio of a structure with added dampers, Engineering Structures, 26, 3, pp. 335-346, (2004)
123