Axial bearing capacity of short FRP confined concrete-filled steel tubular columns

Lan Liu; Yiyan Lu

doi:10.1007/s11595-010-0022-2

Journal of Wuhan University of Technology Materials Science Edition ›› 2010, Vol. 25 ›› Issue (3) : 454 -458. DOI: 10.1007/s11595-010-0022-2

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Axial bearing capacity of short FRP confined concrete-filled steel tubular columns

Lan Liu ¹^,^{^a}
, Yiyan Lu ¹

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Abstract

The bearing capacity of FRP confined concrete-filled steel tubular (FRP-CFST) columns under axial compression was investigated. This new type of composite column is a concrete-filled steel tube (CFST) confined with fiber-reinforced polymer (FRP) wraps. Totally 11 short column specimens were tested to failure under axial compression. The influences of the type and quantity of FRP, the thickness of steel tube and the concrete strength were studied. It was found that the bearing capacity of short FRP-CFST column was much higher than that of comparable CFST column. Furthermore, the formulas for calculating the bearing capacity of the FRP-CFST columns are proposed. The analytical calculated results agree well with the experimental results.

Keywords

columns / concrete-filled steel tubes (CFST) / fiber reinforced polymer (FRP) / confinement / bearing capacity

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Lan Liu, Yiyan Lu. Axial bearing capacity of short FRP confined concrete-filled steel tubular columns. Journal of Wuhan University of Technology Materials Science Edition, 2010, 25(3): 454-458 DOI:10.1007/s11595-010-0022-2

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