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本文基于变分法理论,分析不同壁宽比空心柱的剪力滞效应,并与有限元分析结果进行对比验证;采用有限元方法分析了不同壁宽比对空心柱刚度和最大应力的影响规律;最后对空心柱-箱型转换层-剪力墙结构进行整体分析,研究壁宽比对空心柱轴压比的影响规律。结果表明,随着壁宽比的减小,空心柱的剪力滞与轴压比逐渐增大,刚度整体呈下降趋势。当壁宽比大于等于0.2时,结构轴压比满足规范要求,结构整体受力性能较好。
Based on the variational theory, the shear lag effect of hollow columns with different wall-width ratios is analyzed and compared with the results of finite element analysis. The influence of different wall-width ratios on the stiffness and the maximum stress of hollow columns is analyzed by finite element method Finally, the hollow column-box type transfer layer-shear wall structure is analyzed as a whole to study the effect of wall-to-wall ratio on the axial compression ratio. The results show that the shear lag and axial compression ratio of hollow column increase with the decrease of wall width ratio, and the overall stiffness decreases. When the wall width ratio is greater than or equal to 0.2, the axial compression ratio of the structure meets the specifications, and the overall mechanical performance of the structure is better.