[1]罗帅,刘红军,王刚.考虑桥面运动的斜拉索减振模型[J].深圳大学学报理工版,2010,27(4):470-474.
 LUO Shuai,LIU Hong-jun,and WANG Gang.The characteristic of stay-cable damping system in consideration of bridge deck vibration[J].Journal of Shenzhen University Science and Engineering,2010,27(4):470-474.
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考虑桥面运动的斜拉索减振模型()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第27卷
期数:
2010年4期
页码:
470-474
栏目:
土木建筑工程
出版日期:
2010-10-31

文章信息/Info

Title:
The characteristic of stay-cable damping system in consideration of bridge deck vibration
文章编号:
1000-2618(2010)04-0470-05
作者:
罗帅1刘红军1王刚2
1)哈尔滨工业大学深圳研究生院,深圳 518055
2)深圳大学土木工程学院,深圳 518060
Author(s):
LUO Shuai1LIU Hong-jun1and WANG Gang2
1)Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, P.R.China
2)College of Civil Engineering, Shenzhen University, Shenzhen 518060, P.R.China
关键词:
桥梁工程斜拉索桥面运动减振模型模态阻尼
Keywords:
bridge engineeringstay cablebridge deck vibrationvibration modelmodal damping
分类号:
TU 311.4
文献标志码:
A
摘要:
针对拉索减振模型未考虑桥面-斜拉索-阻尼器耦合振动的现状,提出适用于桥面运动的斜拉索减振分析理论模型,采用复模态分析方法对拉索-阻尼器系统的模态阻尼特性进行数值分析.结果表明,在桥面激励条件下,拉索-阻尼器系统的模态阻尼比与拉索的倾角有关,外部阻尼器相同时,斜拉索的倾角越小,系统的模态阻尼比越小.
Abstract:
The coupled vibration impact of the bridge deck-cable-damper is not reasonably considered in existing vibration models.In this study,a new analytical model is developed in order to investigate the coupling effects among deck-cable-damper.To investigate the affects of modal damping of the cable-damper system subjected to the coupling motion with the deck,the normalized damping ratio is calculated by a numerical process of the normalized damper coefficient for different support conditions.The result shows that the external damping should be greatly increased to provide the same non-dimensional modal damping with the decrease of the stay angle,and that existing models overestimated the value of the non-dimensional modal damping.The new model matches well with the actual occurrence in bridge engineering.

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备注/Memo

备注/Memo:
收稿日期:2010-04-22;修回日期:2010-09-10
基金项目:国家自然科学基金资助项目(51078119);深圳市科技计划支撑资助项目(JC200903120209A)
作者简介:罗帅(1981-),男(汉族),湖北省天门市人,哈尔滨工业大学深圳研究生院博士研究生.E-mail:200677@gmail.com
通讯作者:刘红军(1968-),男(汉族),哈尔滨工业大学深圳研究生院教授、博士生导师.E-mail:liuhongjun@hit.edu.cn
更新日期/Last Update: 2010-11-09