摘要
层间隔震体系是基础隔震体系的发展与延伸，作为一种复杂结构体系，以往的研究仅限于探讨隔震层参数对地震响应及减震效果的影响，本文首次进行了下部结构附加黏滞阻尼器的层间隔震结构振动台试验研究。设计了1个四层的钢框架模型，首先进行了基础固接及1层顶隔震的振动台试验研究，其次，在1层顶隔震的基础上，在下部结构附加了黏滞阻尼器进行下部减震层间隔震结构的振动台试验研究，测定结构的加速度、层间位移及层剪力系数。试验结果表明，下部减震是在层间隔震基础上进一步提高隔震减震效果，降低结构地震响应行之有效的策略。本文还建立了层间隔震结构的有限元模型，将有限元分析结果与试验结果进行了对比。
Abstract
Mid-story isolation structure is developing from base isolation structures. As a complex structural system, previous research has been conventionally confined to the effect of the parameters of isolation layer on earthquake response and seismic reduction effectiveness. In this paper, shaking table test study on mid-story isolation structures with shock absorber on substructure has been firstly conducted. For a four-story steel frame model,firstly, fixed-base and isolated on the top of the first story has been tested, secondly, viscous damper is added on substructure and shaking table test has been done. Acceleration and story displacement and story shear force coefficient have been compared respectively. It is shown that based on isolated on the top of the first story, adding shock absorper on substructure can improve seismic reduction effectiveness. The finite element model of mid-story isolation system is established, and the comparison between finite element analysis result and testing results is conducted.
关键词
层间隔震 /
下部减震 /
振动台试验 /
黏滞阻尼器 /
有限元分析
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Key words
mid-story isolation /
shock absorber on substructure /
shaking table test /
viscous damper /
finite element analysis
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金建敏;谭平;周福霖;张颖;陈建秋;马玉宏.
下部减震层间隔震结构振动台试验研究[J]. 振动与冲击, 2012, 31(6): 104-108
Jin Jian-min;Tan Ping;Zhou Fu-lin;Zhang Ying;Chen Jian-qiu;Ma Yu-hong.
Shaking table test study on mid-story isolation structures with shock absorber[J]. Journal of Vibration and Shock, 2012, 31(6): 104-108
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脚注
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