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作者:

Qiu, Canxing (Qiu, Canxing.) (学者:邱灿星) | Cheng, Lizi (Cheng, Lizi.) | Du, Xiuli (Du, Xiuli.)

收录:

Scopus SCIE

摘要:

Earthquake-induced damage often is caused by large deformation and floor acceleration. To ensure a fast function recovery process, controlling postevent permanent deformation also is very critical. Combining the merits of different lateral force-resisting systems is a promising solution to control these engineering demand parameters simultaneously. Therefore, this study investigated a resilient steel frame with multiple lateral force-resisting systems and developed the corresponding seismic design method. Specifically, the proposed steel frame consists of buckling-restrained braces, viscous damping braces, and a moment-resisting frame, which mainly control peak interstory drift ratio (theta p), peak floor acceleration (Ap), and residual interstory drift ratio (theta r), respectively. Based on the equivalent single-degree-of-freedom systems, nonlinear time-history analyses were conducted to obtain various constant-ductility response spectra. These response spectra were incorporated into the proposed design method which jointly defines theta p, Ap, and theta r as the performance objectives. A six-story benchmark steel frame was selected for demonstrating the seismic performance of the frame and validating the design method. Because theta r is a critical metric for evaluating seismic resilience, three levels of theta r were used in the design examples. The seismic analysis results indicated that the designed structures can well satisfy the preselected performance objectives.

关键词:

Resilience Damping braces Design method Residual deformation Hybrid frame

作者机构:

  • [ 1 ] [Qiu, Canxing]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Cheng, Lizi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Du, Xiuli]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • [Qiu, Canxing]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;

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来源 :

JOURNAL OF STRUCTURAL ENGINEERING

ISSN: 0733-9445

年份: 2024

期: 7

卷: 150

4 . 1 0 0

JCR@2022

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SCOPUS被引频次: 6

ESI高被引论文在榜: 0 展开所有

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