屋盖MRD隔震升船机结构模型振动台试验

英文篇名：Shaking table test on ship lifts model with roof MR damper isolation system
中文刊名：北京航空航天大学学报
英文刊名：Journal of Beijing University of Aeronautics and Astronautics
作者：吕明云 ; 武哲 ; 瞿伟廉
英文作者：Lü Mingyun Wu Zhe(School of Aeronautic Science and Technology ; Beijing University of Aeronautics and Astronautics ; Beijing 100083 ; China)Qu Weilian(Institute of Civil Engineering and Architecture ; Wuhan University of Technology ; Wuhan 430070 ; China)
中文关键词：数值分析 ; 升船机结构 ; 鞭梢效应 ; 屋盖MRD隔震系统 ; 振动台试验
英文关键词：numerical analysis ; ship lifts ; whipping effect ; roof MR damper isolation system ; shaking table test
出版日期：2005-03-30
机构：北京航空航天大学航空科学与工程学院,北京航空航天大学航空科学与工程学院,武汉理工大学土木工程与建筑学院北京100083 ,北京100083 ,武汉430070
年：2005
期：03
出版单位：北京航空航天大学学报

摘要

升船机结构塔柱平台处的刚度突变会引起升船机顶部厂房强烈的地震鞭梢效应 ,在升船机结构模型上设置屋盖磁流变阻尼器MRD (MagnetorhelogicalDamper)隔震系统并进行振动台试验 ,以验证该系统对控制升船机结构顶部厂房地震鞭梢效应的有效性 .设计制作了升船机结构模型和磁流变阻尼器隔震系统 ,分别进行了原结构模型和屋盖MRD隔震结构模型的振动台试验 ,并对模型结构的动力特性和振动反应进行了对比分析 .试验结果表明 :MRD隔震系统改变了模型结构的动力特性 ,有效地减小了升船机结构模型顶部排架层的层间侧移反应 .最后进行了数值分析 ,并与试验结果进行了比较 ,验证了屋盖MRD隔震升船机结构系统力学模型与数值分析方法的正确性
The sudden stiffness change on the top of tube towers of ship lifts caused the intensive seismic whipping effect to the top machinery building. To suppress the whipping effect, a roof MRD (magnetorhelogical damper) isolation system were presented. The structure model of ship lifts and MRD isolation system designed, the shaking table tests were carried on a ship lifts structure model with and without the roof MRD respectively. The dynamic characteristics and the responses were compared for these two shaking model. Test results show that the roof MRD isolation system changed the dynamic characteristics of the model structure, the proposed control system is quite valid in reducing seismic responses of top building of the model structure. The validity of the numerical model and analysis method for roof MRD isolation system were verified by the comparisons between the results of the shaking table tests and numerical analysis.

引文

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