Experimental study on the mechanical mechanism and vibration reduction performance of suspended multi-mass pendulums

被引：0
|
作者：
Sun H. [1 ]
He H. [1 ]
Cheng Y. [1 ]
Zhang Y. [1 ]
Cao Q. [1 ]
机构：
[1] Beijing Key Lab of Earthquake Engineering and Struetural Retrofit, Beijing University of Technology, Beijing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 06期
关键词：
multi-pendulum; multiple high-rise structure; shaking table test; structure control; suspension mass pendulum; tuned vibration damping;
D O I：
10.13465/j.cnki.jvs.2024.06.006
中图分类号：
学科分类号：
摘要：
Traditional suspension mass pendulums include suspension single pendulums, serial suspension multiple pendulums and parallel suspension multiple pendulums. These types of pendulums are simple in structures and clear in mechanism, but narrow in tuning frequency band, excessively long hem of low-frequency super high-rise structures and excessively short hem of high-frequency high-rise structures limit their application in practical engineering. In order to solve this problem, the dynamic equation of the multi-pendulum structures with string and parallel suspensions was established. In order to study the damping performance of these two types of suspension pendulums, the damping effects of the traditional suspension mass pendulum and the string and parallel suspension pendulums with spring on a controlled structure were compared and analyzed by numerical simulation, and a series of shaking table tests were carried out on five types of controlled and uncontrolled structures. The effectiveness of suspension simple pendulum, suspension string, parallel spring-free double pendulum, suspension string, and parallel types of spring double pendulums under traditional ground motion and four kinds of ground motions was verified. The results of numerical simulations and shaking table tests show that the serial suspension multi-pendulum with spring has the best damping effect, and it has the advantages of increasing the tuning frequency band, realizing the multi-order mode control and adjusting the pendulum length flexibly, which is suitable for engineering practice. © 2024 Chinese Vibration Engineering Society. All rights reserved.
引用
收藏
页码：50 / 63
页数：13
相关论文
共 22 条
  • [1] LI Hongnan, New advances in structural vibration control practice [J], World Earthquake Engineering, 11, 2, pp. 34-39, (1995)
  • [2] FU Jiyang, WU Jiurong, XU An, Some issues on wind resistant optimization design and on wind-induced vibration control of tall buildings, Engineering Mechanics, 39, 5, pp. 13-33, (2022)
  • [3] HE Hui, TAN Ping, LIN Songwei, Equivalent additional damping ratio of TMD under random earthquake, Journal of Vibration and Shock, 41, 1, pp. 107-115, (2022)
  • [4] ZHOU Huimeng, WU Bin, TAN Xiaojing, Et al., Experimental study of a shaker structure with tuned liquid dampers [J], China Civil Engineering Journal, 47, pp. 70-75, (2014)
  • [5] LI Hongnan, SONG Benyou, Seismic response reduction for tall buildings by suspended mass pendulums, Earthquake Engineering and Engineering Vibration, 15, 4, pp. 55-61, (1995)
  • [6] LI Hongnan, Study of vibration damping properties of pendulum-structure system, Engineering Mechanics, 13, 3, pp. 242-250, (1996)
  • [7] DENG Hongzhou, DONG Jun, WANG Zhaomin, The design method of wind-induced vibration control for steel TV-tower with pendulum, Special Structures, 16, 1, pp. 18-20, (1999)
  • [8] SETAREH M, RITCHEY J K, BAXTER A J, Et al., Pendulum tuned mass dampers for floor vibration control, Journal of Performance of Constructed Facilities, 20, 1, pp. 64-73, (2006)
  • [9] SETAREH M, RITCHEY J K, MURRAY T M, Et al., Semiactive tuned mass damper for floor vibration control, Journal of Structural Engineering, 133, 2, pp. 242-250, (2007)
  • [10] ROFFEL A J, NARASIMHAN S, HASKETT T., Performance of pendulum tuned mass dampers in reducing the responses of flexible structures, Journal of Structural Engineering, 139, 12, pp. 35-38, (2013)
123