Finite element analysis on fire resistance of steel tubular-steel reinforced concrete column
With the development of building structure,as one of the main forms of modern prefabricated building,the fire resistance of steel-concrete structure has a significant impact on the overall capacity of the building structure.Based on existing experimental research and using finite element analysis software ABAQUS,this article constructed a thermal-mechanical coupled constitutive model of steel tubular-steel reinforced concrete columns,and analyzed the effects of different axial compression ratios,eccentricities,slenderness ratios and cross-sectional side lengths on the fire resistance limit of steel tubular-steel reinforced concrete columns under the ISO-834 standard heating curve.The simulation results indicate that the fire resistance limit of the component decreases with the increase of axial compression ratio,eccentricity and slenderness ratio.Under the same fire and load conditions,the fire resistance limit of the comporent increases with the increase of cross-sectional side length.
fire resistanceABAQUSsteel tubular-steel reinforced concrete columnaxial compression ratio
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NSTL
万方数据
维普
