Shaking table test study on mid-story isolation structures with shock absorber

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (6) : 104-108.

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Shaking table test study on mid-story isolation structures with shock absorber

Jin Jian-min, Tan Ping, Zhou Fu-lin, Zhang Ying, Chen Jian-qiu, Ma Yu-hong

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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.

Key words

mid-story isolation / shock absorber on substructure / shaking table test / viscous damper / finite element analysis

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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