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Author:

Wang, Yanlei (Wang, Yanlei.) | Zhong, Yang (Zhong, Yang.) | Wan, Baolin (Wan, Baolin.) | Zhang, Bing (Zhang, Bing.) | Wei, Zitao (Wei, Zitao.) | Bai, Yulei (Bai, Yulei.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper presents the experimental results of monotonic axial compression tests on eighteen glass fiberreinforced polymer (FRP)-concrete-steel double-skin tubular stub columns (DSTCs) with a rectangular outer glass FRP tube and an elliptical/rectangular inner steel tube, as well as eight rectangular glass FRP-confined hollow stub columns (FCHCs) with an elliptical inner void. The effects of cross-sectional aspect ratio, FRP thickness, void area ratio and the shape of inner steel tube (i.e., elliptical and rectangular) on the axial compressive behavior of confined concrete core in rectangular DSTCs are considered and analyzed. The test results demonstrate that rectangular DSTCs possess excellent bearing capacity and ductility. Additionally, the axial stress-strain curves of confined concrete core in rectangular DSTCs are approximately trilinear and show obvious post-peak softening phenomenon because of the non-uniform and insufficient confinement. Furthermore, the larger aspect ratio, the thicker FRP tube, the higher void area ratio, as well as elliptical inner steel tube (compared with rectangular) have positive confinement effect on the axial compressive behavior of confined concrete core in rectangular DSTCs. Based on the analysis of experimental data, a design-oriented three-stage stress-strain model (considering post-peak softening behavior) of confined concrete in rectangular DSTCs with elliptical inner steel tube is proposed. Through the comparison, it is found that the predictions calculated by the proposed model accord well with the experimental results.

Keyword:

Monotonic axial compression Stress-strain model Composite columns Hybrid columns Fiber-reinforced polymer

Author Community:

  • [ 1 ] [Wang, Yanlei]Dalian Univ Technol, Sch Civil Engn, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
  • [ 2 ] [Zhong, Yang]Dalian Univ Technol, Sch Civil Engn, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
  • [ 3 ] [Wei, Zitao]Dalian Univ Technol, Sch Civil Engn, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
  • [ 4 ] [Wan, Baolin]Marquette Univ, Dept Civil Construct & Environm Engn, Milwaukee, WI 53201 USA
  • [ 5 ] [Zhang, Bing]Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China
  • [ 6 ] [Bai, Yulei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 7 ] [Bai, Yulei]Beijing Univ Technol, Beijing Hist Bldg Protect Engn Technol Res Ctr, Beijing, Peoples R China

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Source :

ENGINEERING STRUCTURES

ISSN: 0141-0296

Year: 2022

Volume: 260

5 . 5

JCR@2022

5 . 5 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:49

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 24

SCOPUS Cited Count: 30

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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