底部带有屈曲约束支撑的摇摆墙框架结构抗震性能分析

冯玉龙 1,吴京 1,孟少平1,王强 1,2,付康 1

振动与冲击 ›› 2016, Vol. 35 ›› Issue (23) : 35-40.

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (23) : 35-40.
论文

底部带有屈曲约束支撑的摇摆墙框架结构抗震性能分析

  • 冯玉龙 1,吴京 1,孟少平1,王强 1,2,付康 1
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Seismic Performance Analysis of Rocking Wall Frame Structure with  Bucking-Restrained Braces in Base

  • FENG Yu-long 1  WU Jing 1  MENG Shao-ping1   WANG Qiang 1,2  FU Kang 1
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摘要

为减小摇摆墙框架结构强震下位移响应及缓解屈曲约束支撑框架的损伤集中效应,基于损伤集中模式,提出了底部带有屈曲约束支撑的摇摆墙框架结构体系。以9层钢框架为基准模型,通过推覆分析和动力时程分析对比研究了该结构体系的抗震性能。分析结果表明:BRB屈服前,该结构体系类似框剪结构,BRB提供抗侧刚度并通过墙体进行传递;BRB屈服后,结构发生摇摆,墙体控制变形模式,BRB通过滞回耗能,可以充分发挥结构各部分的抗震能力。

Abstract

Based on the damage concentrated model, a rocking wall frame (RWF) structure system with bucking-restrained braces (BRBs) in base is put forward to reduce the displacement response of RWF under a strong earthquake and mitigate the damage concentration effect of buckling-restrained braced frame (BRBF). Taking a 9-storey steel frame as the benchmark model, pushover analysis and dynamic time history analysis were conducted to comparatively study seismic performance of the proposed structure system. The results show that: before BRBs yield, this structure performs similarly to the shear wall frame (SWF), in which additional lateral stiffness is provided by BRBs and transferred by the rocking wall; after BRBs yield, the structure tends to rock, in which the rocking wall control the lateral mode and BRBs consume seismic energy, leading to full use of the seismic capacity of each part.

关键词

屈曲约束支撑 / 摇摆墙框架结构 / 推覆分析 / 动力时程分析 / 抗震性能

Key words

 bucking-restrained brace / rocking wall frame structure / pushover analysis / dynamic time history analysis / seismic performance

引用本文

导出引用
冯玉龙 1,吴京 1,孟少平1,王强 1,2,付康 1. 底部带有屈曲约束支撑的摇摆墙框架结构抗震性能分析[J]. 振动与冲击, 2016, 35(23): 35-40
FENG Yu-long 1 WU Jing 1 MENG Shao-ping1 WANG Qiang 1,2 FU Kang 1. Seismic Performance Analysis of Rocking Wall Frame Structure with  Bucking-Restrained Braces in Base[J]. Journal of Vibration and Shock, 2016, 35(23): 35-40

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