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以双层钢板混凝土组合剪力墙的试验研究为基础,采用有限元软件ABAQUS建立双层钢板混凝土组合剪力墙的非线性有限元模型。通过考虑材料非线性和模拟加载全过程对钢板屈曲等受力性能进行分析。有限元分析结果与试验结果吻合较好。在此基础上,分析了影响双层钢板混凝土组合剪力墙承载力和变形能力的主要因素,包括轴压比、高宽比、混凝土强度、钢材强度和钢板厚度。结果表明:随着轴压比的增大,双层钢板混凝土组合剪力墙的极限承载力有所提高,但变形能力下降,随着高宽比的增大,双层钢板混凝土组合剪力墙的极限承载力降低,变形能力增加;随着混凝土强度的增加,双层钢板混凝土组合剪力墙的极限承载力提高,变形能力减小;随着钢材强度和钢板厚度的增加,双层刚板混凝土组合剪力墙承载能力和变形能力都明显增加。提出计算该类组合剪力墙压弯承载力简化计算公式,将该简化公式计算结果与试验结果进行对比验证,结果表明,该公式的计算精度较高,可用于双层钢板混凝土组合剪力墙压弯承载力计算。
Based on the experimental study of shear wall with double-layer steel-concrete composite shear walls, finite element software ABAQUS was used to establish the nonlinear finite element model of the combined shear wall of double-layer steel-concrete-plate. By considering the material nonlinearity and the whole process of simulation loading, the buckling and other mechanical properties of the steel plate are analyzed. Finite element analysis and experimental results agree well. On this basis, the main factors influencing the bearing capacity and deformation capacity of the composite shear wall with double-skinned concrete slab are analyzed, including axial compression ratio, aspect ratio, concrete strength, steel strength and steel thickness. The results show that with the increase of axial compression ratio, the ultimate bearing capacity of the composite shear wall with double-skinned concrete-filled steel plates increases, but the deformation capacity decreases. As the aspect ratio increases, The ultimate bearing capacity decreases and the deformation capacity increases. With the increase of concrete strength, the ultimate bearing capacity of double shear wall combined with shear wall increases, and the deformation capacity decreases. With the increase of steel strength and the thickness of steel plate, Concrete composite shear wall load capacity and deformation capacity are significantly increased. A simplified calculation formula for calculating the bearing capacity of the composite shear wall is proposed. The calculated results of the simplified formula and the experimental results are compared and verified. The results show that the formula has high calculation accuracy and can be used in the composite shear wall Bending capacity calculation.