Nonlinear vibration control of an isolated curved girder bridge under multi-dimensional nonstationary random excitation

被引：0
|
作者：
Li X. [1 ,2 ]
Wang J. [1 ,2 ]
Mu B. [3 ]
机构：
[1] Western Engineering Research Center of Disaster Mitigation in Civil Engineering, Lanzhou University of Technology, Lanzhou
[2] Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou
[3] China Municipal Engineering Northwest Design & Research Institute Co., Ltd., Lanzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 12期
关键词：
Isolated curved girder bridge; Multi-dimensional non-stationary random excitation; Precise integration method; Sequential optimal control(SOC); The Bouc-Wen model;
D O I：
10.13465/j.cnki.jvs.2022.12.010
中图分类号：
学科分类号：
摘要：
The coupling effect of bending and torsion caused by plane irregularity of an isolated curved girder bridge makes its seismic response more complex than that of the isolated straight girder bridge. In order to effectively restrain the excessive displacement of a beam and a bearing in the isolated curved girder bridge, a semi-active control strategy was adopted to ensure its safety. Based on the classical Bouc-Wen model, the nonlinear vibration control equation of the isolated curved girder bridge was established with considering the eccentricity of the upper structure, and after the equation was equivalently linearized, the multi-dimensional non-stationary random excitation considering the torsion component was input. The random response analysis of the isolated curved girder bridge after uncontrolled, classical optimal control (COC) and sequential optimal control (SOC) were carried out by using the hybrid precise integration method. Results show that the dynamic response of the isolated curved girder bridges presents non-stationary characteristics under rare non-stationary random excitations, and the influence of multi-dimensional non-stationary random excitation with considering the torsion component on the dynamic response of the isolated curved girder bridge is greater than that without the torsion component. The dynamic response of the isolated curved girder bridge in all directions are significantly reduced by using the classical optimal control and the sequential optimal control, and the non-stationary characteristics of the structural dynamic response are also obviously restrained. © 2022, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：67 / 74and187
相关论文
共 33 条
  • [1] CHEN Wenbing, TANG Jiaxiang, Dynamic responses analysis of connected double-towers structure under random horizontal-orientation seismic input, Journal of Vibration and Shock, 22, 1, pp. 29-32, (2003)
  • [2] TIAN L, YI S Y, QU B., Orienting ground motion inputs to achieve maximum seismic displacement demands on electricity transmission towers in near-fault regions, ASCE Journal of Structural Engineering, 144, 4, (2018)
  • [3] ZHANG Zhi, LI Xiaojun, LAN Riqing, Design and analysis of shaking table test of a small radius curved bridge, Journal of Vibration and Shock, 38, 4, pp. 95-102, (2019)
  • [4] ALI S, RAMASWAMY A., Optimal dynamic inversion-based semi-active control of benchmark bridge using MR dampers, Structural Control and Health Monitoring, 16, 5, pp. 564-585, (2009)
  • [5] TAN P, AGRAWAL A., Benchmark structural control problem for a seismically excited highw ay bridge, part Ⅱ: phase Ⅰ sample control designs, Structural Control and Health Monitoring, 16, 5, pp. 530-548, (2009)
  • [6] KAWASHIMA K., Seismic design and retrofit of bridge, 12th World Conference on Earthquake Engineering, (2000)
  • [7] JIANG Jianjun, LI Jianzhong, FAN Lichu, Study on aseismic performance of combination of laminated rubber bearing and viscous damper for bridge, Journal of Highway and Transportation Research and Development, 22, 8, pp. 44-48, (2005)
  • [8] FAN Lichu, WANG Zhiqiang, Application of seismic isolation technology for bridges in China, Journal of Vibration Engineering, 12, 2, pp. 173-181, (1999)
  • [9] RUIZ JULIAN F D, HAYASHIKAWA T, OBATA T, Et al., Seismic performance of isolated curved steel viaducts equipped with deck unseating prevention cable restrainers, Journal of Constructional Steel Research, 63, pp. 237-253, (2007)
  • [10] LI Zhengying, JIANG Linjun, LI Zhengliang, Comparative analysis of seismic control schemes for continuous curved girder bridge, Journal of Vibration and Shock, 35, 10, pp. 157-161, (2016)
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