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作者:

Bai, Yu-Lei (Bai, Yu-Lei.) | Zhang, Yu-Feng (Zhang, Yu-Feng.) | Jia, Jun-Feng (Jia, Jun-Feng.) (学者:贾俊峰) | Han, Qiang (Han, Qiang.) | Gao, Wan-Yang (Gao, Wan-Yang.)

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EI Scopus SCIE

摘要:

This paper presents an experimental study on the compressive behavior of hybrid fiber reinforced polymer (FRP)concrete-steel double-skin tubular stub columns (DSTSCs) with recycled aggregate concrete (RAC) and a polyethylene terephthalate (PET) FRP jacket. RAC is a green, sustainable alternative to natural aggregate concrete (NAC), while its mechanical properties are generally inferior to NAC. Polyethylene terephthalate (PET) FRP is manufactured from recycled plastics and has a large rupture strain (LRS) value of more than 7% compared to pure polyethylene FRP. In this study, a total of 20 DSTSC specimens were tested under axial compression. The main parameters studied were the RAC replacement percent (0, 50 and 100%), the FRP jacket thickness, and steel tube thicknesses (3 and 5 mm). Test results indicated that the compressive behavior of DSTSC specimens with RAC and PET FRP is similar to that of specimens with NAC and PET FRP, and both types of columns exhibit highly ductile compressive behavior. It is also observed that the compressive behavior of DSTSCs is primarily influenced by the confinement stiffness of the FRP jacket and the steel tube, and the replacement percent of RAC has marginal effect. The increase of the FRP jacket or steel tube stiffness can counterbalance the replacement percent effect of RAC on the axial compressive behavior of DSTSCs. Finally, the suitability of the existing ultimate condition models of different types of DSTSCs was investigated based on the experimental results of this study.

关键词:

Large rupture strain (LRS) PET FRP Recycled aggregate concrete (RAC) Double-skin Steel tubes Tubular stub columns

作者机构:

  • [ 1 ] [Bai, Yu-Lei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Zhang, Yu-Feng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Jia, Jun-Feng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Han, Qiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 5 ] [Gao, Wan-Yang]Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai, Peoples R China

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来源 :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

年份: 2022

卷: 332

7 . 4

JCR@2022

7 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:66

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 17

SCOPUS被引频次: 18

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

近30日浏览量: 1

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