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以再生粗骨料取代率和钢管壁厚为主要变化参数,研究T形钢管再生混凝土短柱的轴压性能,应用有限元软件ABAQUS对轴压短柱试件进行了模拟,分析了再生骨料取代率和钢管壁厚对钢管再生混凝土轴压短柱力学性能的影响,得出构件核心区混凝土的荷载-变形曲线和应力-应变曲线的变化规律。结果表明:同T形钢管普通混凝土短柱相比,T形钢管再生混凝土短柱表现出较好的力学性能;钢管混凝土轴压短柱中钢管和混凝土相互作用的机理同样适用于T形钢管再生混凝土轴压短柱;当核心区为再生混凝土时,需要钢管的约束力更大。
The axial compressive properties of recycled concrete short columns of T-shaped steel tube were studied by taking the replacement ratio of coarse aggregate and the wall thickness of steel tube as the main parameters. The finite element software ABAQUS was used to simulate the axial compression short columns. The effects of recycled aggregate The substitution rate and the wall thickness of steel pipe on the mechanical properties of concrete filled steel tubular short stub columns were obtained. The load-deformation curve and stress-strain curve of concrete core zone were obtained. The results show that the short columns of T-shaped steel tubular recycled concrete show better mechanical properties than the T-shaped steel concrete short columns. The mechanism of the interaction between the steel tube and the concrete in the concrete-filled steel tubular short columns is also suitable for the regeneration of T-shaped steel tubes Concrete axial compression short columns; when the core area for the regeneration of concrete, steel pipe binding needs more.