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作者:

Wan, Jun (Wan, Jun.) | Wang, Caisen (Wang, Caisen.) | Liang, Jiongfeng (Liang, Jiongfeng.) | Lin, Siqi (Lin, Siqi.)

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EI Scopus SCIE

摘要:

This paper reports the compressive behavior of concrete-filled double skin steel tubular (CFDST) columns strengthened by CFRP under axial loading. The outer skin was made of square hollow sections (SHS), while the inner skin was made of circular hollow sections (CHS). Twelve CFDST columns strengthened by CFRP and three CFDST columns were tested. The failure mode, load-displacement relationship, axial load-carrying capacity and initial stiffness are given and analyzed. The results showed that the CFDST columns strengthened by CFRP have better mechanical properties than the column without CFRP reinforcement (i.e. the CFDST columns). The CFDST columns strengthened by CFRP eventually failed due to CFRP rupture or buckling of the external steel tube near the end and cracked concrete damage from the outer steel tube. The stiffness and axial load bearing capacity of the column can be improved as the number of CFRP layers increases. A simplified design formula of CFDST columns strengthened by CFRP is proposed, which is in good agreement with the experimental results.

关键词:

failure modes simplified design formula concrete-filled double skin steel tube axial compression CFRP

作者机构:

  • [ 1 ] [Wan, Jun]Jiangxi Sci & Technol Normal Univ, Coll Architecture Engn, Nanchang, Peoples R China
  • [ 2 ] [Wang, Caisen]East China Univ Technol, Fac Civil & Architecture Engn, Nanchang, Peoples R China
  • [ 3 ] [Liang, Jiongfeng]East China Univ Technol, Fac Civil & Architecture Engn, Nanchang, Peoples R China
  • [ 4 ] [Lin, Siqi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 5 ] [Lin, Siqi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, 100 Pingleyuan, Beijing 100124, Peoples R China

通讯作者信息:

  • [Lin, Siqi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, 100 Pingleyuan, Beijing 100124, Peoples R China;;

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来源 :

ADVANCES IN STRUCTURAL ENGINEERING

ISSN: 1369-4332

年份: 2023

期: 7

卷: 26

页码: 1276-1286

2 . 6 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

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SCOPUS被引频次: 3

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