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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

22卷

期数:

2005年04期

页码:

5-10

栏目:

出版日期:

2006-12-20

文章信息/Info

Title:

On-site observation of wind-rain induced vibration of stay cables and its control

作者:

陈政清;

湖南大学 风工程试验研究中心,湖南 长沙 410082

Author(s):

CHEN Zheng-qing

Wind Engineering Experiment Research Center, Hunan University, Changsha 410082, China

关键词:

斜拉索;  风雨振;  现场观测;  磁流变阻尼器;  振动控制

Keywords:

stay cable;  wind-rain induced vibration;  on-site observation;  MR damper;  vibration control

分类号:

U441.3

DOI:

-

文献标志码:

A

摘要:

介绍了斜拉索风雨振现场观测与振动控制研究的情况。在湖南岳阳洞庭湖大桥上建立了风雨振观测系统,并连续4年进行了长时间现场观测,在风速、风向、雨量等参数对风雨振的影响规律与拉索风雨振振动形态方面有了新的发现。提出了一种多模态振动控制的参数优化方法。进行了拉索—磁流变阻尼器系统的减振性能仿真研究与现场试验研究,全面评估了磁流变阻尼器的实际减振性能。开发了一套磁流变式拉索减振系统,并于2002年在该大桥全桥实施,3年来显示了良好的减振效果。同时针对城市桥梁磁流变减振系统的低压供电线路最易受到人为破坏的问题,设计开发了一种永磁可调式磁流变阻尼器(PMAA-MR),并将其成功应用于湖南长沙洪山庙大桥的拉索减振。

Abstract:

On-site observation of wind-rain induced vibration of stay cables and its control were studied. A monitoring system for wind-rain induced vibration was built on the Dongting Lake Bridge and has worked for four years. Some new discoveries were obtained in the influence of wind speed, wind direction and rainfall on wind-rain induced vibration and in the vibration shape of stay cables. A method for parameter optimization based on multimode vibration control was presented. To investigate the performance of MR dampers on mitigating cables vibration, both of numerical simulations and field tests were conducted. A new technique of mitigating cables vibration using MR dampers was exploited and applied on the Dongting Lake Bridge in 2002. The observations of the past three years show that the effectiveness of the mitigating vibration is quite well. To avoid thedestruction on purpose of the power supply system to MR dampers, a PMAA-MR damper was developed and successfully fitted on the Hongshanmiao Bridge in Changsha.

参考文献/References:

[1] HIKAMI Y,SHIRAISHI N.Rain-wind induced vibrations of cables in cable-stayed bridges[J].Journal of Wind Engineering and Industrial Aerodynamics,1992,43(3):2 011-2 022.
[2] SWAN R.Vibrations damped[J].Bridge Design and Engineering,1997,41(9):44-45.
[3] TAKENA K,MIKI C,SHIMOKAWA H.Fatigue resistance of large-diameter cable for cable-stayed bridges[J].Journal of Structural Engineering,1992,118(3):701-715.
[4] VERWIEBE C.Exciting mechanisms of rain-wind-induced vibration[J].Structural Engineering International,1998,53(8):129-135.
[5] PACHECO B M,FUJINO Y,SULEKH A.Estimation curve for modal damping in stay cables with viscous damper[J].Journal of Structural Engineering,1993,119(6):1 961-1 979.
[6] DYKE S J,SPENCER J B F,SAIN M K,CARLSON J D.On the efficacy of magnetorheological damper for seismic response reduction[A].1997 ASME Design Engineering Technical Conference[C].California:Sacramento,1997.14-17.
[7] SAITO T,MATSUMOTO M,KITAZAWA M.Rain-wind excitation of cables on cable-stayed Higashi-Kobe bridge and cable vibration control[A].Proceedings of Conference on Cable-stayed and Suspension Bridges[C].Deauville:Springer Verlag,1994.507-514.
[8] SPENCER J B F,DYKE S J,SAIN M K,CARLSON J D.Phenomenological model for magnetorheological dampers[J].Journal of Engineering Mechanics,1997,123(3):230-238.
[9] CHEN Z Q,WANG X Y,KO J M,NI Y Q.MR damping system for mitigating wind-rain induced vibration on Dongting Lake cable-stayed bridge[J].Wind and Structures,2004,7(5):293-304.
[10] CHEN Z Q, WNAG X Y,NI Y Q,KO J M.Field measurements on wind-rain-induced vibration of bridge cables with and without MR damper[A].Proceedings of the Third World Conference on Structural Control[C].Como:F Casciati,2002.393-402.
[11] CHEN Z Q,WANG X Y,KO J M,NI Y Q,SPENCER B F,JR,YANG G.MR damping system on Dongting Lake cable-stayed bridge[J].Proceedings of SPIE,2003,5057:229-235.
[12] WANG X Y,NI Y Q,KO J M,CHEN Z Q.Optimal design of viscous dampers for multi-mode vibration control of bridge cables[J].Engineering Structures,2005,27(5):792-800.
[13] 王修勇,陈政清,倪一清.斜拉桥拉索风雨振观测及其控制[J].土木工程学报,2003,36(6):53-59.
[14] 王修勇,陈政清,倪一清,高赞明.斜拉桥拉索磁流变阻尼器减振技术研究[J].中国公路学报,2003,16(2):52-56.
[15] 王修勇,陈政清,高赞明,倪一清.磁流变阻尼器对斜拉索振动控制研究[J].工程力学,2002,19(6):22-28.
[16] 王修勇,陈政清,何旭辉,等.洞庭湖大桥风雨振减振试验研究[J].桥梁建设,2002,32(2):11-14.
[17] 王修勇,陈政清,何旭辉,倪一清.斜拉桥拉索风雨振控制的智能阻尼技术[J].振动与冲击,2002,21(3):26-30.
[18] 王修勇,陈政清,倪一清.斜拉索-磁流变阻尼器系统半主动控制的神经网络法[J].振动与冲击,2003,22(4):49-53.
[19] 王修勇,戚跃然,陈政清,倪一清.磁流变阻尼器控制拉索振动的优化参数研究[J].湘潭矿业学院学报,2003,18(1):31-35.
[20] 王修勇,陈政清.确定斜拉索减振阻尼器优化参数的一种方法[J].振动与冲击,2002,21(1):89-91.

相似文献/References:

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　TIAN Jun,WANG Wen-wei,SONG Yi-fan.Calculation Method for Unstressed Length of Stay Cables in Long-span Cable-stayed Bridges[J].Journal of Architecture and Civil Engineering,2016,33(04):71.
[2]谭冬梅,王凯丽,瞿伟廉.三维新月形变截面覆冰斜拉索气动力特性研究[J].建筑科学与工程学报,2017,34(03):66.
　TAN Dong-mei,WANG Kai-li,QU Wei-lian.Study on Aerodynamic Characteristics of 3D Variable Cross-section Stay Cables with Crescent-shape Ice Accretion[J].Journal of Architecture and Civil Engineering,2017,34(04):66.
[3]刘健新,李哲.气动措施对斜拉索风荷载及结构响应的影响[J].建筑科学与工程学报,2010,27(03):89.
　LIU Jian-xin,LI Zhe.Influence of Aerodynamic Measure on Wind Load and Structural Response of Stayed-cable[J].Journal of Architecture and Civil Engineering,2010,27(04):89.

备注/Memo

备注/Memo:

收稿日期:2005-09-20
基金项目:国家自然科学基金项目(50178013)
作者简介:陈政清(1947-),男,湖南湘潭人,湖南大学教授,博士生导师,工学博士.E-mail:zqchen@hnu.cn

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更新日期/Last Update: 2006-12-20