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作者:

Han, Lin-Hai (Han, Lin-Hai.) | Song, Tian-Yi (Song, Tian-Yi.) | Li, Shuai (Li, Shuai.)

收录:

EI Scopus SCIE

摘要:

During the life-cycle of a building, the structure might be subjected to multiple hazards such as fire, earthquake and impact. Compared with the traditional structure design methods based on a single type of disaster load, the structure subjected to multiple and coupled disaster loads would be more dangerous and worth to be investi-gated. In this paper, the post-fire seismic behavior of concrete-filled steel tubular (CFST) column to steel beam joints with blind-bolted connections subjected to coupled fire and cyclic loads were investigated. A total of ten post-fire hysteresis joint tests were designed and conducted, and the testing parameters included heating time, post-fire column load ratio and thickness of fire protection layer. The test results indicated that the joint failure mode changed from column failure to connection failure when the post-fire column load ratio ranged from 0.3 to 0.6. Generally, the blind bolts in the panel zone of this joint specimen showed acceptable working performance in fire, but gap between the stee tube and beam end plate might be formed during the post-fire cyclic loading process. Finite element analysis (FEA) models were established to simulate and discuss the post-fire seismic performance of this type of blind-bolted CFST joints under the coupled fire and loading process. Finally, a simplified post-fire hysteretic relationship model for this type of joint was proposed.

关键词:

Prefabricated beam-column joint Seismic behaviour Concrete-filled steel tube Full -range fire Post -fire performance Blind-bolted connection

作者机构:

  • [ 1 ] [Han, Lin-Hai]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 2 ] [Li, Shuai]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 3 ] [Han, Lin-Hai]Guangxi Univ, Nanning 530004, Peoples R China
  • [ 4 ] [Song, Tian-Yi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • [Han, Lin-Hai]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China;;[Han, Lin-Hai]Guangxi Univ, Nanning 530004, Peoples R China;;

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来源 :

ENGINEERING STRUCTURES

ISSN: 0141-0296

年份: 2023

卷: 283

5 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

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SCOPUS被引频次: 12

ESI高被引论文在榜: 0 展开所有

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