| 大高宽比隔震结构地震反应的实用分析方法 |
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| 引用本文： | 刘文光,杨巧荣,周福霖.大高宽比隔震结构地震反应的实用分析方法[J].地震工程与工程振动,2004,24(4):115-121. |
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| 作者姓名： | 刘文光 杨巧荣 周福霖 |
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| 作者单位： | 哈尔滨工业大学,深圳研究生院,广东,深圳,518055;广州大学,工程抗震研究中心,广东,广州,510405;广州大学,工程抗震研究中心,广东,广州,510405 |
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| 基金项目： | 广州市科技局项目(200309) |
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| 摘 要： | 本文提出了高层隔震结构等大高宽比隔震结构体系地震反应分析的单质点、2质点和3质点剪切型简化计算模型，同时还提出了高宽比影响系数的概念和计算式。这种纯剪切的简化计算模型成功地模拟了剪切加转动多质点计算模型的动力特性，通过高宽比影响系数对剪切型计算模型得到的剪力系数进行非线性放大，使数十质点的隔震结构体系都能够简化成单质点、2质点和3质点体系进行地震反应分析。文末对22层高宽比为5．01的某22层隔震结构进行了算例分析，简化计算理论的计算结果和时程分析法计算结果一致性良好。
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| 关 键 词： | 大高宽比隔震结构 剪切型模型 地震反应分析 |
| 文章编号： | 1000-1301(2004)04-0115-07 |
Simplified method of earthquake response analysis for slender isolated structure |
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| Liu Wenguang.Simplified method of earthquake response analysis for slender isolated structure[J].Earthquake Engineering and Engineering Vibration,2004,24(4):115-121. |
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| Authors: | Liu Wenguang |
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| Institution: | Liu Wenguang~ |
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| Abstract: | The single-mass, 2-mass and 3 mass shear computation models are provided in the paper to analyze the earthquake response for large aspect ratio isolated structure such as high-rise building, and the concept and computation formula of aspect ratio influence coefficient are proposed too. The pure shear model reflects the dynamic properties of MDOF system with shear-rocking model through the non-linear enlarging of shear coefficient by aspect ratio influence coefficient, and nearly all isolated structure system can be simplified into single-mass, 2-mass and 3-mass shear model to analyze the earthquake response. A 22-storied isolated structure with large aspect ratio 5.01 is analyzed with simple method and time history method. The results show that the new simple computation method is precise enough to use in engineering. Its computation is very consistent with the time history method. |
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| Keywords: | large aspect ratio isolated structure shear model earthquake response analysis |
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