Bias mechanical properties of concrete composite columns with round steel tubes with inner GFRP tubes
Using the finite element software ABAQUS,a one-way pressurized steel concrete column assembly suitable for inner GFRP tube cylinders was established,and the pivotal variables influencing the mechanical characteristics and failure modes of this composite column were investigated.The findings reveal that the ulti-mate load-bearing capacity of this composite column diminishes with the increase of the oblique distance,while it enhances as the thickness of the outer-fitted steel pipe and the inner-fitting GFRP tube increases.The influ-ence of the thickness of the inner GFRP tube wall upon the ultimate load-bearing capacity of the component is less pronounced than that wrought by the eccentricity and the thickness of the external circular steel pipe.The longitudinal alignment comparison has a minimal impact on the ultimate load-bearing capacity.A method for calculating the ultimate load capacity of unidirectional pressurized components has been established using the influence coefficient approach,which may serve as a reference for related engineering.
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维普
