一种对公路桥梁振动半主动控制的新策略

doi:10.12068/j.issn.1005-3026.2015.06.028

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (6): 887-891.DOI: 10.12068/j.issn.1005-3026.2015.06.028

一种对公路桥梁振动半主动控制的新策略

马涌泉，邱洪兴，祁永成

(东南大学土木工程学院，江苏南京210096)

收稿日期:2013-11-28 修回日期:2013-11-28 出版日期:2015-06-15 发布日期:2015-06-11
通讯作者: 马涌泉
作者简介:马涌泉(1984-)，男，山东安丘人，东南大学博士研究生；邱洪兴(1962-)，男，江苏无锡人，东南大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51078077)； “十二五”国家科技支撑计划项目(2012BAJ14B00).

A New Semi-active Control Strategy of Highway Bridge Vibration

MA Yong-quan， QIU Hong-xing， QI Yong-cheng

College of Civil Engineering， Southeast University， Nanjing 210096， China.

Received:2013-11-28 Revised:2013-11-28 Online:2015-06-15 Published:2015-06-11
Contact: MA Yong-quan
About author:-
Supported by:
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摘要/Abstract

摘要： 为了有效抑制隔震桥梁震后过大的梁体及支座位移，提出了一种适合MRD的基于力反馈(FF)形式的半主动控制策略.首先提出了采用隔震装置提供的恢复力作为主要反馈信号的半主动控制策略，然后给出了欲使MRD产出预期阻尼力而应施加的电流准则，最后设计出基于力反馈形式的半主动闭环控制系统.分别采用Passive-off，Passive-on，FF和CO等四种控制算法对一座三跨隔震连续梁桥的各评价指标进行了计算.结果表明:FF算法对梁体位移、支座位移和墩底剪力的控制效果要比其他三种算法显著.

关键词: 振动控制, 公路桥梁, 磁流变液, 逆模型, 力反馈

Abstract: To effectively suppress the oversize displacement of both grider and bearing on seismically isolated bridges after an earthquake， a new semi-active control strategy based on the force-feedback (FF) fit for magneto rheological dampers (MRD) was proposed. First， the semi-active control strategy taking the restoring force provided by seismic isolation devices as the main feedback signal was proposed. Then， the current criteria which were applied to help the damping force produced by MRD approximate to the desired control force were proposed. Finally， the semi-active closed-loop control system based on the force-feedback was designed. The various evaluation criteria of tri-span seimicically isolated continuous grider bridges with Passive-off control， Passive-on control， FF control and clipped optimal (CO) control were computed respectively. The results indicated that the control effects on girder displacement， bearing displacement and base shear under the FF control are more significant than those of Passive-on control， Passive-off control and CO control.

Key words: vibration control, highway bridge, magnetorheological fluid, inverse model, force feedback

中图分类号:

O328
U442.55

马涌泉，邱洪兴，祁永成. 一种对公路桥梁振动半主动控制的新策略[J]. 东北大学学报:自然科学版, 2015, 36(6): 887-891.

MA Yong-quan， QIU Hong-xing， QI Yong-cheng. A New Semi-active Control Strategy of Highway Bridge Vibration[J]. Journal of Northeastern University Natural Science, 2015, 36(6): 887-891.

参考文献

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[9]马涌泉，陈水生.基于屈服强度与支座分布影响的LRB隔震效果研究［J］.西安理工大学学报，2011，27(3):373-378.(Ma Yong-quan，Chen Shui-sheng.Research on the influence of yield strength and bearings distribution on isolated effectiveness of LRB［J］.Journal of Xi’an University of Technology，2011，27(3):373-378.)
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一种对公路桥梁振动半主动控制的新策略

A New Semi-active Control Strategy of Highway Bridge Vibration

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