Seismic response of base isolated structure with displacement dependent friction dampers

被引：0

作者：

Zhou Q. ^{[1
]}

Jiang W. ^{[1
]}

Liu X. ^{[1
]}

机构：

[1] Hubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2016年 / 35卷 / 22期

关键词：

Base isolation; Displacement dependent friction damper; Near-fault pulse-type seismic; Normal earthquake; Seismic response;

D O I：

10.13465/j.cnki.jvs.2016.22.030

中图分类号：

学科分类号：

摘要：

The mechanical model of a displacement dependent friction damper was improved by considering the contribution of slope reaction to output force generated by the damper. Then, taking a five-storey base isolated structure as an example, the influence of the damper on seismic-resistant behaviors of the base isolated structure with lead rubber bearings was evaluated. The numerical analysis shows that the friction damper can effectively reduce the displacement of isolation floor while increase the base shear force and the top floor acceleration of the main structure under normal seismic excitation. When the building is subjected to the near-fault pulse-type earthquake, the displacement of isolation floor is significantly reduced and to some extend the seismic response of the main structure is also suppressed. In addition, three main parameters determining the mechanical property of the displacement depended friction damper, that is, initial displacement, stiffness of spring and slope angle, are of obvious influences on the seismic response of isolated structures, which were investigated detailedly. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：204 / 208

页数：4

共 10 条

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