串联隔震系统水平刚度及对结构地震响应影响

杜永峰;朱前坤;李慧

振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 21-24.

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 21-24.
论文

串联隔震系统水平刚度及对结构地震响应影响

  • 杜永峰1,2; 朱前坤1; 李慧2
作者信息 +

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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文章历史 +

摘要

针对工程界比较关注的柱串联隔震系统的水平刚度问题,建立了水平刚度计算公式,探讨了压应力对水平刚度及结构地震响应的影响。首先建立了单个叠层橡胶支座的场矩阵;其次根据传递矩阵法建立了柱串联隔震系统的场矩阵,根据所得场矩阵推导出串联隔震系统顶部状态变量与任意截面内力和位移之间的关系,进而推导出串联隔震系统的水平刚度计算公式,避免了繁琐的力学推导过程;最后探讨了压应力对水平刚度及结构地震响应的影响。结果表明水平刚度随着压应力的增大而减少,近断层附近建议采用隔震支座直接固定在基础上的隔震方案。

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.

关键词

柱串联隔震体系 / 传递矩阵法 / 水平刚度 / 压应力 / 地震响应

Key words

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

引用本文

导出引用
杜永峰;朱前坤;李慧. 串联隔震系统水平刚度及对结构地震响应影响[J]. 振动与冲击, 2011, 30(11): 21-24
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

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