Abstract

Square steel tube cannot provide effective confinement to core concrete in a concrete filled steel tubular (CFST) column, in this regard, the transversely-placed high-strength steel wire mesh (SWM) is proposed to enhance such confinement. The enhancement mechanism of SWM is rather different from traditional CFST columns where the confinement is provided from inside of core concrete through the interactions between SWM and surrounding concrete, such confinement reduces the dilation of concrete. The compressive behavior of high strength SWM reinforced square CFST columns were investigated experimentally, it is found the load-carrying capacity of square CFST columns can be largely improved.

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