基于相似理论的三跨桥梁磁流变隔振

doi:10.13229/j.cnki.jdxbgxb20170222

吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (3): 787-795.doi: 10.13229/j.cnki.jdxbgxb20170222

基于相似理论的三跨桥梁磁流变隔振

李锐¹, 张路阳¹, 刘琳¹, 武粤元¹, 陈世嵬²

1.重庆邮电大学汽车电子与嵌入式系统工程研究中心,重庆 400065;
2.重庆科技学院数理学院,重庆 401331;

收稿日期:2017-03-10 出版日期:2018-05-20 发布日期:2018-05-20
通讯作者: 陈世嵬(1986-),男,副教授,博士.研究方向:振动控制与智能材料.E-mail:foranother@qq.com
作者简介:李锐(1975-),男,教授,博士.研究方向:智能检测技术与智能结构系统.E-mail:lirui_cqu@163.com
基金资助:
重庆市杰出青年基金项目(cstc2014jcyjjq40004); 国家自然科学基金项目(11372366,11502038); 重庆市巴渝学者特聘教授项目.

Magneto-rheological vibration isolation for three-span bridge based on similarity theory

LI Rui¹, ZHANG Lu-yang¹, LIU Lin¹, WU Yue-yuan¹, CHEN Shi-wei²

1.Engineering Research Center of Automotive Electronics and Embedded System, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
2.Academe Math and Physical,Chongqing University of Science and Technology, Chongqing 401331, China

Received:2017-03-10 Online:2018-05-20 Published:2018-05-20

摘要/Abstract

摘要： 采用无量纲相似分析法,计算出基于磁流变支座的三跨桥梁与小尺度试验台架的动力学关系,并以该关系为基础来指导试验台架模型的设计。运用Matlab分别对两系统进行动力学理论计算,仿真与试验结果表明:桥梁原型与模拟模型的加速度、位移等具有较好的相似性。进一步根据模型参数,搭建小尺度试验台架,试验结果与理论值基本吻合,桥面振动加速度峰值最大减小42%,位移峰值最大减小36%。表明采用相似理论进行模型试验研究能够揭示出桥梁可控隔振原型的主要隔振性能。

关键词: 机械设计, 桥梁, 无量纲分析, 磁流变支座, 隔振

Abstract: The dimensionless similarity analysis method is adopted to calculate the dynamic similarity relationship between a three-span bridge and a small-scale test bench based on Magneto-rheological Bearing (MRB). On the basis of the relationship, the test bench model s designed. Dynamics of the two systems are calculated by Matlab respectively. Simulation results show that the acceleration, displacement of the prototype and similar models have good similarity. Further, according to the model parameters, a small-scale test bench is built, and the experimental results are in good agreement with the theoretical results. The acceleration peak and displacement peak of the bridge deck can be reduced by 42% and 36%, respectively. Therefore, the model experimental study based on similarity theory can reveal the vibration isolation performance of the controllable prototype.

Key words: mechanical design, bridge, dimensionless analysis, magneto-rheological elastomers bearing, vibration isolation

中图分类号:

TH113

李锐, 张路阳, 刘琳, 武粤元, 陈世嵬. 基于相似理论的三跨桥梁磁流变隔振[J]. 吉林大学学报(工学版), 2018, 48(3): 787-795.

LI Rui, ZHANG Lu-yang, LIU Lin, WU Yue-yuan, CHEN Shi-wei. Magneto-rheological vibration isolation for three-span bridge based on similarity theory[J]. 吉林大学学报(工学版), 2018, 48(3): 787-795.

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基于相似理论的三跨桥梁磁流变隔振

Magneto-rheological vibration isolation for three-span bridge based on similarity theory

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