Horizontal stiffness of laminated rubber bearing serially connected with column and its effects on seismic response of isolated structure

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (11) : 21-24.

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Horizontal stiffness of laminated rubber bearing serially connected with column and its effects on seismic response of isolated structure

Du Yong-feng1,2 ; Zhu Qian-kun1; Li Hui2

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Abstract

According to horizontal stiffness of laminated rubber bearing serially connected with column, which concerned engineering field, the horizontal stiffness formula was established and compressive stress influence on horizontal stiffness and dynamic response of isolated structure were investigated. First, field matrix of single laminated rubber bearing was established. Secondly, field matrix of the laminated rubber bearing serially connected with column, the relation between internal force and displacement at arbitrary cross sections and state variable at end of laminated rubber bearing serially connected with column, the horizontal stiffness formula based on transfer matrix method were derived, avoiding tedious mechanical derivation. Finally, compressive stress influence on horizontal stiffness and seismic response of isolated structure were investigated. The results shows that the horizontal stiffness decrease with the rise of the compressive stress, laminated rubber bearings fixed in foundation should be adopted in near fault area.

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laminated rubber bearing serially connected with column / transfer matrix method / horizontal stiffness / compressive stress / seismic response

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Du Yong-feng;;Zhu Qian-kun;Li Hui. Horizontal stiffness of laminated rubber bearing serially connected with column and its effects on seismic response of isolated structure[J]. Journal of Vibration and Shock, 2011, 30(11): 21-24