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作者:

He, Yuexi (He, Yuexi.) | Zhao, Yan-Gang (Zhao, Yan-Gang.) | Lin, Siqi (Lin, Siqi.) | Zhang, Zhenjun (Zhang, Zhenjun.)

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摘要:

This paper developed a novel bolted connection of prefabricated partially encased composite (PEC) beam to concrete-filled steel tubular (CFST) column by end -plates or n-connectors, and two joints with varying design details were tested subjected to cyclic loading. The seismic performance of the developed connections was investigated by experimental and finite element (FE) analysis. It was observed that both the two type connections exhibited concrete crushing within the PEC beam, accompanied by localized buckling and eventual fracture of the flanges in the main steel component of the beam. At the same time, other components were essentially in the elastic phase, such as end -plates, n-connectors, high-strength bolts, and column steel tubes. The bolted end -plate connections demonstrated excellent hysteretic performance, exhibiting high ductility factors. The stiffness, ductility, and energy dissipation capacity of the bolted n-connector connections were significantly diminished due to the influence of relative slippage between the n-connectors and the beams, in stark contrast to the bolted end -plate connection. According to Eurocode 3, the suggested connection configurations exhibited semi -rigid behavior and full-strength characteristics for non-sway frames.

关键词:

n-connector connection PEC beam-to-CFST column joint End-plate connection Cyclic loading Seismic behavior

作者机构:

  • [ 1 ] [He, Yuexi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Zhao, Yan-Gang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Lin, Siqi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Zhenjun]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 5 ] [Zhao, Yan-Gang]Kanagawa Univ, Dept Architecture & Bldg Engn, Yokohama, Kanagawa 2218686, Japan

通讯作者信息:

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

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来源 :

ENGINEERING STRUCTURES

ISSN: 0141-0296

年份: 2024

卷: 314

5 . 5 0 0

JCR@2022

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SCOPUS被引频次: 4

ESI高被引论文在榜: 0 展开所有

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