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Author:

Wu, Shan (Wu, Shan.) | He, Haoxiang (He, Haoxiang.) | Lan, Bingji (Lan, Bingji.) | Chen, Yifei (Chen, Yifei.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper proposes a uniform damage design method for buckling-restrained braced frames (BRBFs). Through the optimization of buckling-restrained braces (BRBs), an improved design result could be achieved. This means a uniform degree of damage to each story, so that the weak story could be eliminated. The objective was to achieve an equal or similar damage index for each story by optimizing the initial stiffness of the BRBs. The uniform damage design of BRBFs was achieved using a combination of an intelligent algorithm and the finite element platform. Non-linear time history analysis and incremental dynamic analysis were conducted to verify the optimization results. These results indicated that the damage degree distribution could be effectively controlled by optimizing the BRBs' initial stiffness distribution using an intelligent algorithm. The optimal initial stiffness distribution of BRBs under different seismic waves was not identical. A design scheme that takes the average value of the optimal results under different seismic waves as the initial stiffness distribution of BRBs could improve structural seismic capacity.

Keyword:

Intelligent algorithm Seismic fragility Structural optimization design Uniform damage Buckling-restrained brace

Author Community:

  • [ 1 ] [Wu, Shan]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China
  • [ 2 ] [He, Haoxiang]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China
  • [ 3 ] [Lan, Bingji]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China
  • [ 4 ] [Chen, Yifei]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China
  • [ 5 ] [Wu, Shan]North China Univ Sci & Technol, Coll Civil & Architectural Engn, Tangshan 063210, Peoples R China

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Source :

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH

ISSN: 0143-974X

Year: 2023

Volume: 208

4 . 1 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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