Behaviour of grout-filled double-skin tubular steel stub-columns: Numerical modelling and design considerations

Abstract

Number of figures: 13 Number of tables: 5 Nomenclature Ag Cross sectional area of grout core Ak Cross sectional area of hollow part Aso Cross sectional area of outer steel tube Asi Cross sectional area of inner steel tube Do External tube diameter Di Internal tube diameter Dg Grout core diameter f syo External steel yield strength f syi Internal steel yield strength fsy Steel yield strength f rp Lateral confining pressure f gt Grout tensile strength fgc Compressive strength of grout f cu Compressive strength of cubic sample f c Compressive cylinder strength f cc ' Confined compressive strength f c '

Numerical modelling of concrete-filled aluminium alloy 6082-T6 columns under axial compression

“…In line with past studies [9,[14][15][16], the concrete damage plasticity model was used in the current investigation. This model can effectively capture the behaviour of concrete in the plastic range by adopting a Drucker-Prager hyperbolic flow potential function.…”

Flexural behaviour of concrete-filled double skin aluminium alloy tubes

“…FE models were developed utilizing the measured geometric dimensions and material properties listed in Tables 1, 2 and 3. The outer and inner tubes were modelled using four-node shell elements (S4R) [47][48][49] and the concrete infill was simulated considering eight-node solid elements (C3D8R) [9,50,51]. To select the optimum size of S4R and C3D8R elements, a mesh sensitivity study was performed.…”

Flexural Buckling of Concrete-Filled Aluminium Alloy CHS Columns: Numerical Modelling and Design

“…In line with past studies [13][14][15], the inelastic behaviour of concrete was modelled employing the concrete damaged plasticity model available in Abaqus [10]. The flow potential eccentricity and the viscosity parameter were defined equal to 0.1 and 0, accordingly.…”