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首先对双钢板混凝土组合剪力墙中的钢板进行了屈曲理论分析,对核心受约束混凝土进行了受力分析.以北京中国尊核心筒结构底部剪力墙为原型,进行了1/4缩尺模型的双钢板混凝土组合剪力墙试件和内置钢板混凝土组合剪力墙的轴压性能试验,对比分析其荷载-位移曲线、轴压承载力等.考虑到钢板屈曲对钢板轴压承载力的影响以及受约束混凝土轴心抗压强度的提高,提出了双钢板混凝土组合剪力墙轴压承载力的计算公式,与应用其他计算方法计算得到的试验试件的轴压承载力相比,本文提出的计算公式的计算结果与试验结果吻合度最高.结合其他文献中双钢板混凝土组合剪力墙轴压性能试验的相关数据进行验证,表明利用本论文提出的计算公式得到的轴压承载力计算值与试验结果吻合较好.
Firstly, the buckling theory analysis of the steel plate in the double-steel-concrete composite shear wall and the stress analysis of the core-restrained concrete were carried out. Taking the shear wall at the bottom of the core structure of Beijing CNG as the prototype, Model of double-steel-concrete composite shear wall specimens and built-in concrete composite shear wall of the axial compression test, comparative analysis of load-displacement curve, axial compression bearing capacity, etc. Taking into account the buckling of steel plate axial bearing capacity The compressive strength of the concrete with axial load and the axial compressive strength of the confined concrete are calculated. The formulas for calculating the axial compressive bearing capacity of the shear wall with double steel-concrete composite shear walls are presented. Compared with the axial compressive capacity of the test specimens calculated by other methods, The calculated results are in good agreement with the experimental ones.According to the data from other literatures, the results of axial compressive bearing capacity obtained from the calculation formula in this paper are calculated The values agree well with the experimental results.