Hybrid FRP-concrete-steel double-skin tubular columns of varying slenderness ratios under eccentric compression

Xie, Pan1,3; Jiang, Tao2; Lin, Guan3,5,6; Li, Lijuan4; Guo, Yongchang4

2023-02-01

10.1016/j.jcsr.2022.107741

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH   影响因子和分区

0143-974X

1873-5983

Hybrid fiber reinforced polymer (FRP)-concrete-steel double-skin tubular columns (DSTCs) are an emerging form of hybrid column with excellent mechanical performance and durability. Such columns consist of an outer FRP tube, an inner steel tube and a concrete infill between the two tubes. While extensive experimental and theoretical studies have been conducted on such columns, these studies have been focused on short specimens under concentric compression. This paper presents the results of a series of tests on hybrid DSTCs of varying slenderness ratios subjected to eccentric compression. The effects of FRP confinement stiffness, load eccentricity, and slenderness ratio on the behavior of hybrid DSTCs were examined. The test results showed that the test hybrid DSTCs exhibited excellent performance with great ductility. A theoretical model with incorporations of existing stressstrain models for FRP-confined concrete was then adapted to simulate the behavior of the test hybrid DSTCs. The comparisons showed that the direct use of a concentric loading stress-strain model led to underestimation of the deformation capacity of the test hybrid DSTCs. Compared with the other two models, the eccentric-loading stress-strain model previously developed by the authors' group provided more accurate predictions for the ultimate deformation of the test hybrid DSTCs.

Hybrid DSTCs Slenderness Eccentric compression Stress -strain model Fiber-reinforced polymer (FRP)

SCI ; EI

英语

通讯

Na- tional Natural Science Foundation of China["51778246","51778569"] ; Guangzhou Municipal Science and Technology Bureau[202102080315] ; Research Grants Council of the Hong Kong Special Administrative Region, China[PolyU 152153/14E]

Construction & Building Technology ; Engineering

Construction & Building Technology ; Engineering, Civil

WOS:000915250600001

ELSEVIER SCI LTD

20225213300913

Fiber reinforced plastics ; Reinforced concrete ; Steel testing ; Stress-strain curves ; Tubular steel structures

Structural Members and Shapes:408.2 ; Concrete:412 ; Steel:545.3 ; Fiber Products:819.4

ENGINEERING

Web of Science

1.South China Agr Univ, Coll Water Conservancy & Civil Engn, Guangzhou 510642, Peoples R China
2.Zhejiang Univ, Space Struct Res Ctr, Dept Civil Engn, Hangzhou 310058, Peoples R China
3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China
4.Guangdong Univ Technol, Sch Civil & Transportat Engn, Guangzhou 511400, Peoples R China
5.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Xie, Pan,Jiang, Tao,Lin, Guan,et al. Hybrid FRP-concrete-steel double-skin tubular columns of varying slenderness ratios under eccentric compression[J]. JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH,2023,201.

Xie, Pan,Jiang, Tao,Lin, Guan,Li, Lijuan,&Guo, Yongchang.(2023).Hybrid FRP-concrete-steel double-skin tubular columns of varying slenderness ratios under eccentric compression.JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH,201.

Xie, Pan,et al."Hybrid FRP-concrete-steel double-skin tubular columns of varying slenderness ratios under eccentric compression".JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 201(2023).