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作者:

Jiang, Zi-Qin (Jiang, Zi-Qin.) | Yan, Tian (Yan, Tian.) | Zhang, Ai-Lin (Zhang, Ai-Lin.) | Yang, Xiao-Feng (Yang, Xiao-Feng.) | Yu, Cheng (Yu, Cheng.) | Li, Ran (Li, Ran.)

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Scopus SCIE

摘要:

The damage control and post-earthquake repair of beam-column joints is a hot research topic in the seismic field. Therefore, a new type of earthquake-resilient prefabricated steel beam-column joint with replaceable double flange cover plates (RFCP-ERPSJ) was proposed. The yield load of this joint can be controlled by the buckling or slip of plates, so it can be divided into plate-slipping type and the plate-buckling type. Considering that the yield load of the plate-buckling type RFCP-ERPSJ is stable, firstly, a practical design procedure and design theory of the newly plate-buckling type joint is proposed in this paper. Then, to study the seismic performance and post -earthquake repairability of this RFCP-ERPSJ, a total of 6 full-size specimens are designed and subjected to a low -cycle reciprocating loading test and constant-amplitude low-cycle fatigue test. The effects of the thickness of FCPs, the material strength of FCPs, dog-bone width, amount of FCPs connecting bolts, and bolt spacing at the middle row on the seismic performance and energy dissipation performance of the joint are studied. The experimental results are also compared with the theoretical results. The research showed that the plastic hinge of the joint could be concentrated on the replaceable FCPs, so as to protect the beams and columns. By replacing damaged FCPs and bolts, the repaired joint had the same performance as the original joint. After comparison, the theoretical yield load is in good agreement with the experimental yield load. Besides, the small thickness and dog-bone width of FCPs can reduce the load carrying capacity and energy dissipation capacity of joints, and improving the material strength of FCPs will reduce the ductility of joints and increase the risk of plastic damage to the beams and columns. If the amount of FCPs connecting bolts is reduced, the specimens mainly dissipate energy by the slip of FCPs, and the load carrying capacity will descend. Excessive bolt spacing at the middle row will reduce the load carrying capacity and energy dissipation capacity.

关键词:

Plate-buckling type Prefabricated steel beam-column joint Earthquake-resilient Design method Seismic behavior Damage control

作者机构:

  • [ 1 ] [Jiang, Zi-Qin]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Yan, Tian]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Ai-Lin]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Yang, Xiao-Feng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Ran]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 6 ] [Jiang, Zi-Qin]Beijing Adv Innovat Ctr Future Urban Design, Beijing 100044, Peoples R China
  • [ 7 ] [Yu, Cheng]Univ North Texas, Dept Struct Engn, Denton, TX 76207 USA

通讯作者信息:

  • [Zhang, Ai-Lin]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;

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来源 :

STRUCTURES

ISSN: 2352-0124

年份: 2023

卷: 50

页码: 1100-1113

4 . 1 0 0

JCR@2022

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