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作者:

Chen, Rong (Chen, Rong.) | Qiu, Canxing (Qiu, Canxing.) (学者:邱灿星) | Hao, Dongxue (Hao, Dongxue.)

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SCIE

摘要:

Featured Application The proposed bracing system provides a novel solution for controlling peak seismic responses and for eliminating residual deformation for conventional concentrically braced frames. Multi-story steel frames are popular building structures. For those with insufficient seismic resistance, their seismic capacity can be improved by installing buckling-restrained braces (BRBs), which is known for high energy dissipation capacity, and the corresponding frame is denoted as BRB frame (BRBF). However, BRBFs are frequently criticized because of excessive residual deformations after earthquakes, which impede the post-event repairing work and immediate occupancy. Meanwhile, self-centering braces (SCBs), which were invented with a particular purpose of eliminating residual deformation for the protected structures, underwent fast development in recent years. However, the damping capability of SCBs is relatively small because their hysteresis is characterized by a flag shape. Therefore, this paper aims to combine these two different braces to form a hybrid bracing system. A total of four combinations are proposed to seek an optimal solution. The multi-story steel frames installed with BRBs, SCBs, and combined braces are numerically investigated through nonlinear static and dynamic analyses. Interested seismic response parameters refer to the maximum story drift ratios, maximum floor accelerations, and residual story drift ratios. The seismic analysis results indicate that the frames using the combined bracing system are able to take the advantages of BRBs and SCBs.

关键词:

buckling-restrained brace (BRB) multi-story steel frames seismic analysis self-centering bracing elements

作者机构:

  • [ 1 ] [Chen, Rong]Northeast Elect Power Univ, Sch Civil Engn & Architecture, Jilin 132012, Jilin, Peoples R China
  • [ 2 ] [Hao, Dongxue]Northeast Elect Power Univ, Sch Civil Engn & Architecture, Jilin 132012, Jilin, Peoples R China
  • [ 3 ] [Qiu, Canxing]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • 邱灿星

    [Chen, Rong]Northeast Elect Power Univ, Sch Civil Engn & Architecture, Jilin 132012, Jilin, Peoples R China;;[Qiu, Canxing]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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来源 :

APPLIED SCIENCES-BASEL

年份: 2020

期: 1

卷: 10

2 . 7 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:28

JCR分区:2

被引次数:

WoS核心集被引频次: 9

SCOPUS被引频次: 9

ESI高被引论文在榜: 0 展开所有

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