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- W4225539059 abstract "AbstractConcrete-filled steel tubular (CFST) columns have been widely adopted in structural engineering. It is used most often for tall building structures and bridge piers construction processes to enhance and modify the structural behaviors. CFST columns are a form of composite construction that comprises of concrete-filled into a steel tube. The purpose of using a steel tubular structure is to provide necessary confinement to the concrete core of the construction. This confinement eventually leads to the increment of deformation capacity and compressive strength for the inherent material property of the concrete. Under the concentric loading phenomenon, compressive loading on CFST columns has been studied, and constitutive models were developed. But there is still a lack of data on the eccentric loading mechanism of the CFST columns. In this paper, compressive loading on CFST columns under both concentric and eccentric conditions have been simulated using ABAQUS based on experimental data and a numerical modelling approach has been developed. Experimental data have been used for numerical modelling comparison. Load–deflection behavior, failure modes, and ultimate strength have been investigated. A new strain hardening/softening function is developed for accurately simulating the damaged plasticity material model of the concrete structures. The results indicated that the response of the models in the plastic zone is greatly influenced by the dilation angle and the ratio of the second stress variant on the tensile meridian. Also, the contact stress between the steel and concrete responds sensitively with the eccentric ratios, which indicate a profound effect of the steel tube confinement of the considered structure.KeywordsCFST columnsEccentric loadingFinite element analysisStress–strain model" @default.
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- W4225539059 date "2022-01-01" @default.
- W4225539059 modified "2023-09-26" @default.
- W4225539059 title "Numerical Modelling of Concrete-Filled Steel Tube Columns Under Eccentric Loading" @default.
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- W4225539059 doi "https://doi.org/10.1007/978-981-16-7924-7_14" @default.
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