| 基于强震记录的建筑结构动力特性的初步识别 |
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| 引用本文： | 姚久纲,李鸿晶,刘明才.基于强震记录的建筑结构动力特性的初步识别[J].南京工业大学学报(自然科学版),2005,27(6):37-40. |
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| 作者姓名： | 姚久纲 李鸿晶 刘明才 |
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| 作者单位： | 1. 南京工业大学,土木工程学院,江苏,南京,210009
2. 宁波经济技术开发区,质量监督站,浙江,宁波,315800 |
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| 基金项目： | 江苏省教育厅自然科学基金项目（02KJB560002） |
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| 摘 要： | 利用喜来登环球旅馆于1994年北岭地震中获得的强地震反应观测记录,初步识别了该旅馆结构恢复力的时变特性,分析了结构刚度在地震过程中的时变规律,并对该结构的表现做出初步解释.喜来登旅馆结构体系在立面上并不是均匀布置,于四层处发生较大改变,导致结构刚度发生变化.从初步识别结果上看,一至三层的刚度明显高于其他各层,三至九层刚度退化得最快,应该是结构刚度突变所致.该工作可作为进一步研究喜来登旅馆这类建筑结构实际抗震性能的基础.
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| 关 键 词： | 建筑结构 强震纪录 恢复力 抗震性能 时变特性 识别 结构动力特性 建筑结构 识别 强震记录 结构刚度 时变特性 观测记录 地震反应 地震过程 |
| 文章编号： | 1671-7643(2005)06-0037-04 |
| 收稿时间： | 2005-03-08 |
| 修稿时间： | 2005年3月8日 |
Preliminary identification of nonlinear dynamic parameters of a building structure from recorded strong motions |
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| YAO Jiu-gang,LI Hong-jing,LIU Ming-cai.Preliminary identification of nonlinear dynamic parameters of a building structure from recorded strong motions[J].Journal of Nanjing University of Technology,2005,27(6):37-40. |
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| Authors: | YAO Jiu-gang LI Hong-jing LIU Ming-cai |
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| Institution: | 1. College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China; 2. Construction Quality Supervision Office, Ningbo Economy and Technology Development District, Ningbo 315800, China |
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| Abstract: | The time-variant properties of the restoring forces of a twenty-story reinforced concrete building structure, the Sheraton-Universal Hotel were identified preliminarily based on the strong motrons recorded in the 1994 Northridge California earthquake records in strumented in the Hotel. Furthermore the time-variant stiffnesses of the structure in different stories were obtained, and the behavior of the structure in the seismic process is also explained. The results in the paper provide a basis for the further researches on seismic properties to the reinforced conerctc framc structures srmilar to the Sheraton- Universal Hotel. |
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| Keywords: | building structure strong motion records restoring forces seismic properties time-variant characteristics system identification |
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