| 基于环境激励的混凝土梁式结构模态参数识别 |
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| 引用本文： | 姜浩,乔丽.基于环境激励的混凝土梁式结构模态参数识别[J].吉林建筑工程学院学报,2011,28(3):5-7. |
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| 作者姓名： | 姜浩 乔丽 |
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| 作者单位： | 1. 吉林建筑工程学院研究生处,长春,130118
2. 吉林省城乡规划设计研究院,长春,130061 |
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| 基金项目： | 吉林省教育厅“十一五”科技研究项目(吉教科合字2010106); 吉林建筑工程学院青年科技发展基金项目(J20091102) |
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| 摘 要： | 本文针对时域方法只需实测响应信号的特点,对基于环境激励下模态参数识别的时域方法自然激励技术(NExT)、特征系统实现算法(ERA)进行详细讨论,并针对两种算法的特点,将其结合形成NExT/ERA时域联合算法,使之有效识别环境激励下结构模态参数,并建立混凝土连续梁结构数值模型进行仿真模拟,验证了算法的可行性,为工程实践提...
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| 关 键 词： | 参数识别 NExT 自然激励技术 混凝土结构 数值仿真 |
Modal Parameters Identification of Concrete Beam Based on the Ambient Excitation |
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| JIANG Hao,QIAO Li.Modal Parameters Identification of Concrete Beam Based on the Ambient Excitation[J].Journal of Jilin Architectural and Civil Engineering,2011,28(3):5-7. |
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| Authors: | JIANG Hao QIAO Li |
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| Affiliation: | JIANG Hao1,QIAO Li2 (1:Graduate Department Jilin Institute of Architecture and Civil Engineering,Changchun,China 130118,2:Jilin Province City and Countryside Plan Design Research Institute,China 130061) |
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| Abstract: | On account of the feature that time-domain method only need actual response signals,the NExT and ERA based on ambient excitation are discussed.Two methods are combined to become a kind of time-domain joint algorithm for structural modal parameter identification effectively.The numerical simulations of a concrete continuous beam are carried out to verify the feasibility of time-domain joint algorithm.The study has important theoretical significance and practical engineering value. |
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| Keywords: | modal parameter identification ambient excitation NExT concrete beam numerical simulation |
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