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作者:

Xu, Kun (Xu, Kun.) | Dai, Qian (Dai, Qian.) | Bi, Kaiming (Bi, Kaiming.) | Fang, Genshen (Fang, Genshen.) | Ge, Yaojun (Ge, Yaojun.)

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EI Scopus SCIE

摘要:

Tuned mass damper inerter (TMDI) is a promising device for structural vibration control. Existing design formulas for TMDI are derived based on an undamped single-degree-of-freedom primary structure. When applied to vortex-induced vibration (VIV) control of bridges, it may lead to a suboptimal design of TMDI, since VIV is characterized by nonlinear aeroelastic effect and sensitive to the structural damping. This study proposes closed-form design formulas of TMDI that are suitable for VIV control of bridges. Governing equations of the bridge-TMDI system are first established in modal coordinate. Based on these equations, the equivalent damping of TMDI to the bridge is derived. Then, the design formulas for TMDI frequency and damping ratio with predetermined TMDI mass, inertance, and inerter arrangement are developed to achieve the required equivalent damping of TMDI. The reliability of the proposed formulas is validated by utilizing the wind tunnel experimental data of a bridge. It is found that the effect of TMDI to the bridge can be treated as an increase of the structural damping. It is also found that the TMDI parameters will betray the optimum values if the VIV force model fails to correctly predict the required equivalent damping of TMDI. To eliminate this disadvantage, some design suggestions are presented. The comparison with existing TMDI design formulas and discussions on the application scope of the proposed formulas are also conducted. The proposed formulas can achieve a better control efficiency for the same predetermined TMDI parameters and have high accuracy within the scope of practical engineering applications.

关键词:

long-span bridge vortex-induced vibration vibration control design formulas TMDI

作者机构:

  • [ 1 ] [Xu, Kun]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Dai, Qian]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Bi, Kaiming]Curtin Univ, Sch Civil & Mech Engn, Ctr Infrastruct Monitoring & Protect, Bentley, WA, Australia
  • [ 4 ] [Fang, Genshen]Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai, Peoples R China
  • [ 5 ] [Ge, Yaojun]Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai, Peoples R China

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来源 :

STRUCTURAL CONTROL & HEALTH MONITORING

ISSN: 1545-2255

年份: 2022

期: 10

卷: 29

5 . 4

JCR@2022

5 . 4 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:49

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 15

SCOPUS被引频次: 17

ESI高被引论文在榜: 0 展开所有

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