Seismic damage control method of continuous girder bridge with MR dampers

被引：0
|
作者：
Chen Y. [1 ]
Shi Y. [2 ]
Lü Y. [3 ]
Huang X. [1 ]
机构：
[1] College of Airport Engineering, Civil Aviation University of China, Tianjin
[2] College of Civil Engineering, Tianjin University, Tianjin
[3] College of Civil Engineering, Tianjin Chengjian University, Tianjin
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 03期
关键词：
Continuous girder bridge; Damper; Seismic damage; Semi-active control;
D O I：
10.13465/j.cnki.jvs.2021.03.014
中图分类号：
学科分类号：
摘要：
Based on the damage mechanism of continuous girder bridge under earthquake, the damper output scheme based on generalized horizontal stiffness ratio of pier was established by using MR damper control element, and the nonlinear seismic damage control method of continuous girder bridge was proposed. The damage control of a 3-span continuous girder bridge was studied, and the increasing dynamic analysis (IDA) method was used to do its damage analysis before and after the bridge was controlled by MR dampers. The results showed that the proposed control method can effectively reduce the bridge damage, make the bridge pier damage tend to be uniform, and significantly improve the aseismic performance of the bridge; seismic damage analyses of bridges with different control schemes and different design transfer coefficients reveal the semi-active control scheme is better than the PON (passive on) control scheme in controlling residual displacement of pier beam and pier damage; the design transfer coefficient has a larger influence on control effect, so it should be chosen reasonably. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：103 / 108and146
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