The effect of beam-column degradation and shear ratio on seismic performance of self-centering BRB dual systems

被引：0

作者：

Xie Q. ^{[1
]}

Zhou Z. ^{[1
]}

Kong X. ^{[1
]}

Meng S. ^{[1
]}

机构：

[1] Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2018年 / 37卷 / 08期

关键词：

Beam-column degradation; Dual system; Seismic performance; Self-centering; Shear ratio;

D O I：

10.13465/j.cnki.jvs.2018.08.002

中图分类号：

学科分类号：

摘要：

Self-centering buckling-restrained brace (SC-BRB) dual systems are composed of moment resisting frames and SC-BRB frames. The analysis models of SC-BRB dual systems with different shear ratio (the ratio of shear bear by moment resisting frame to the design base shear) were built by adopting two kinds of modeling methods, considering beam-column degradation and without considering beam-column degradation, respectively. The nonlinear static analysis and dynamic time history analysis were conducted to investigate the influence of beam-column degradation and shear ratio on seismic performance of SC-BRB dual systems. The result demonstrates that considering beam-column degradation will decrease the structural base shear, and weaken the influence of the lateral stiffness mutation between adjacent floors, which may change the peak story drift ratio distribution along the structure height, but increase the residual deformation of structures; the increasing of shear ratio will increase the influence of beam-column degradation, and weaken the flag shape hysteretic characteristic of the whole structures, but can effectively decrease the peak story drift ratio and deformation concentration effect of structures under earthquake. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：9 / 16

页数：7

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