Behavior and calculation on concrete-filled steel CHS (Circular Hollow Section) beam-columns

“…Detailed analysis results can be found in [3] and [22]. Based on a detailed parametric analysis, it was found that the abovementioned parameters have similar effects on the currently studied CFDST members.…”

Section: Important Parametersmentioning

confidence: 99%

Behaviour of concrete-filled double skin rectangular steel tubular beam–columns

Tao

Han

2006

Journal of Constructional Steel Research

Self Cite

159

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“…The critical buckling load of the specimen is predicted before the specimen is loaded: the transverse and the longitudinal CFRPs are simplified to equivalent steel tube, and then the critical buckling load can be calculated by using corresponding equations of C-CFST columns (Han et al [11]). However, the equivalent steel tube besides longitudinal CFRP is not considered in calculating the confinement factor of the steel tube s…”

Section: Test Setup and Instrumentationmentioning

confidence: 99%

“…The research work in this field has been studied systematically in the literature. Besides the systematic investigations on the static and the hysteretic behavior of the components and the connections (Han [9]; Han et al [10]; Han et al [11]; Han et al [12]; Han and Li [13]), fire resistance (Han [14]), torsion performance (Han et al [15]) and local compression (Han et al [16]) of this structure are also reported. Comparing with the CF-FRP-T, CFST has higher shearing load carrying capacity.…”

Section: Introductionmentioning

confidence: 97%

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Static Behavior of Axially Compressed Circular Concrete Filled CFRP-Steel Tubular (C-Cf-CFRP-St) Columns With Moderate Slenderness Ratio

Wang¹,

Qu²,

Shao³

et al. 2016

Volume 12 Number 3

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Thirty-two specimens are experimentally tested in this paper to study the static performance of axially compressed circular concrete filled CFRP-steel tubular (C-CF-CFRP-ST) columns. The tested results indicate that, for columns with relative small slenderness ratio, failure is dominated by the strength loss of the materials. However, for columns with relative large slenderness ratio, failure is controlled by instability. The load versus deflection curves at the mid-height of the composite column can be divided into three stages, i.e., elastic, elasto-plastic and softening stage. Analyses of the tested results show that distribution of longitudinal strains in the steel tube over depth on the cross-section is approximately linear, and the steel tube and its outer CFRP material can cooperate both longitudinally and transversely. The longitudinal strain and the transverse strain at a point have opposite signs, and the steel tube under longitudinal tension has no transverse confinement effect on its concrete. The Deformed modes of the columns, the axial load verses deflection curves at the mid-height, the axial load verses axial shortening curves and the stresses in the steel tube are simulated by using finite element method. The calculated results agree well with the experimental results to prove the accuracy of the finite element model. Stresses in the concrete, the steel tube and the CFRPs are analyzed by using finite element method. The numerical results show that the interaction force between the steel tube and the concrete decreases gradually from compressive region to tensile region. The adhesive strength between the concrete and the steel tube has little effect on the critical buckling load and on the elastic stiffness of the columns. Equation for calculating the critical buckling load of the composite columns is presented, and the estimated results agree well with the experimental results.

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Behavior and calculation on concrete-filled steel CHS (Circular Hollow Section) beam-columns

Cited by 50 publications

References 12 publications

Experimental behaviour of recycled aggregate concrete filled steel tubular columns

Experimental behaviour of recycled aggregate concrete filled steel tubular columns

Behaviour of concrete-filled double skin rectangular steel tubular beam–columns

Static Behavior of Axially Compressed Circular Concrete Filled CFRP-Steel Tubular (C-Cf-CFRP-St) Columns With Moderate Slenderness Ratio

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