| 某隔震结构动力特性的理论分析与脉动测试 |
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| 引用本文： | 贾洪,徐茂义,闫维明,李振宝.某隔震结构动力特性的理论分析与脉动测试[J].震灾防御技术,2007,2(4):384-390. |
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| 作者姓名： | 贾洪 徐茂义 闫维明 李振宝 |
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| 作者单位： | 1. 中铁建设集团有限公司,北京,100040
2. 北京工业大学,北京,100022 |
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| 摘 要： | 本文针对国内最大单体隔震建筑建立了SAP2000三维分析模型,并进行了动力特性的理论分析;现场对实际建筑进行了平移振动、扭转振动、垂直振动和平面内弯曲4个方面的脉动测试。利用工程振动反演理论分析了该结构的固有频率、振型、阻尼等动力特性,将实测结构动力特性与理论分析结果进行比较,详细分析实测结果与理论结果差别的原因,并据此对理论模型进行修正,为今后类似结构的设计积累了资料。
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| 关 键 词： | 隔震结构 脉动 自振频率 振型 阻尼 |
| 收稿时间： | 2007-11-18 |
| 修稿时间： | 2007年11月18 |
Micro-Tremor Test and Theory Analysis on Dynamic Behaviors of an Isolation Structures |
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| Jia Hong,Xu Maoyi,Yan Weiming and Li Zhengbao.Micro-Tremor Test and Theory Analysis on Dynamic Behaviors of an Isolation Structures[J].Technology for Earthquake Disaster Prevention,2007,2(4):384-390. |
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| Authors: | Jia Hong Xu Maoyi Yan Weiming and Li Zhengbao |
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| Institution: | Zhong-Tie Construction Group Corporation Limited, Beijing 100040, China;Zhong-Tie Construction Group Corporation Limited, Beijing 100040, China;Beijing University of Technology, Beijing 100022, China;Beijing University of Technology, Beijing 100022, China |
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| Abstract: | The 3D analysis model of the largest isolation structures in China is established using SAP2000 and the dynamic behavior of the structure is analyzed theoretically. The translational, torsional, vertical and bend in plane of the structure is tested on spot via micro-tremor method. Engineering vibration inversion theory is used to analyze the natural frequency, mode shape, damping ratio of the structure. Based on the comparison of test and theoretical analyzing results by which we figured out the reason of difference, necessary amendments have been added into the model, this makes preparation for future structure design. |
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| Keywords: | Isolation structures Microtremor Natural frequency Mode shape Damping ratio |
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