| 某框架结构基础隔震地震反应对比分析 |
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| 引用本文： | 易鸣,姚运生,王秋良,魏勇,雷霆.某框架结构基础隔震地震反应对比分析[J].西北地震学报,2019,41(2):340-346. |
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| 作者姓名： | 易鸣 姚运生 王秋良 魏勇 雷霆 |
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| 作者单位： | 中国地震局地震研究所(地震预警湖北省重点实验室), 湖北 武汉 430071,中国地震局地震研究所(地震预警湖北省重点实验室), 湖北 武汉 430071;防灾科技学院, 河北 三河 065201,中国地震局地震研究所(地震预警湖北省重点实验室), 湖北 武汉 430071,中国地震局地震研究所(地震预警湖北省重点实验室), 湖北 武汉 430071,中建三局, 湖北 武汉 430071 |
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| 基金项目： | 国家自然科学基金项目（41572354） |
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| 摘 要： | 基于结构动力学原理和有限元基本理论,利用SAP2000有限元分析软件,以某框架结构基础隔震楼和与其相近的非隔震楼为研究对象分别建立分析模型,运用动力时程分析法对两种模型进行水平地震反应分析。结果表明:基础隔震楼的水平向地震反应远小于非隔震楼,其上部结构的自振周期明显大于非隔震楼,其层间剪力和基底剪力、楼层相对位移和加速度低于非隔震楼。总体来说,隔震支座可以显著降低水平向地震对于结构的不良反应,值得推广应用。
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| 关 键 词： | 基础隔震 地震反应 动力时程分析 SAP2000 |
| 收稿时间： | 2018/4/10 0:00:00 |
Seismic Response Analysis of the Base Isolation of a Frame Structure |
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| YI Ming,YAO Yunsheng,WANG Qiuliang,WEI Yong and LEI Ting.Seismic Response Analysis of the Base Isolation of a Frame Structure[J].Northwestern Seismological Journal,2019,41(2):340-346. |
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| Authors: | YI Ming YAO Yunsheng WANG Qiuliang WEI Yong and LEI Ting |
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| Institution: | Hubei Key Laboratory of Earthquake Early Warning, Institute of Seismology, CEA, Wuhan 430071, Hubei, China,Hubei Key Laboratory of Earthquake Early Warning, Institute of Seismology, CEA, Wuhan 430071, Hubei, China;Institute of Disaster Prevention, Sanhe 065201, Hebei, China,Hubei Key Laboratory of Earthquake Early Warning, Institute of Seismology, CEA, Wuhan 430071, Hubei, China,Hubei Key Laboratory of Earthquake Early Warning, Institute of Seismology, CEA, Wuhan 430071, Hubei, China and China Construction Third Engineering Bureau, Wuhan 430071, Hubei, China |
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| Abstract: | Based on the principle of structural dynamics and the basic theory of the finite element method, the finite element analysis software SAP2000 was used to establish an analytical model for an actual frame structure base isolation building and a similar non-isolated building, respectively. The dynamic time history analysis method was applied to analyze the horizontal seismic responses of the two models. The results showed that the horizontal seismic response of the base-isolated building was much smaller than that of the non-isolated building, and the natural period of the superstructure of the base-isolated building was significantly larger than that of the non-isolated building. Moreover, the interstory shear force, basement shear force, and the relative displacement and acceleration of the floor were lower than those of the non-isolated building. In general, isolation bearings can significantly reduce the adverse effects of horizontal ground motion on a structure and thus deserve propagation. |
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| Keywords: | base isolation seismic response dynamic time-history analysis Sap2000 |
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