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振动台试验过程中基于加速度响应的动力特性识别 被引量:1

Dynamic Property Identification Based on Acceleration Response in the Shake Table Test
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摘要 在一组不同构造类型桥墩抗震性能研究的振动台试验研究中,采用了基于白噪声激励的频率识别方法和直接基于加速度时程响应的频率振型识别方法,对各个试件的动力特性结果进行了研究.与常规振动台试验过程中的动力损伤识别方法不同,建议采用时域随机子空间方法进行结构频率振型的识别.另一方面,针对本实验研究中的桥墩,采用单自由度模型对不同简化程度的模型进行了动力特性比较.分析结果表明:采用动力特性识别方法是合理可行的. In the earthquake performance of a group of different structural types bridge piers by shake table test, dynamic performance of each specimen was studied. Compared with the conventional dy- namic damage recognition methods in shake table test, the stochastic subspace method in time domain were suggested to carry on frequency recognition under the different peak value acceleration cases. The analysis result indicated that, the dynamic performance recognition methods in this article are rea- sonable and feasible, may be valuable for experimental study personnel in the shake table test.
出处 《武汉理工大学学报(交通科学与工程版)》 2012年第6期1105-1108,共4页 Journal of Wuhan University of Technology(Transportation Science & Engineering)
基金 国家自然科学基金项目(批准号:51178350) 铁道部科技研究开发计划项目(批准号:2010G007-J) 上海市教委重点学科建设项目(批准号:J51502)资助
关键词 动力特性 随机子空间方法 振动台试验 节段拼装 桥墩 dynamic property stochastic subspace method shake table test pre-cast segment bridge column
作者简介 葛继平(1979-):男,博士,副教授,主要研究领域为损伤识别
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