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中文摘要：
在试验研究的基础上，采用通用有限元软件ABAQUS对空腹式型钢混凝十（SRC）异形柱中框架在单调荷载作用下的受力机理进行了研究。计算和分析了该结构的水平荷载一位移骨架曲线；对结构整体及节点核心区等关键位置在加载结束时的变形进行分析，并与试验结果进行对比。分析表明，有限元计算曲线与试验实测曲线吻合较好，结构有限元模拟的最终变形与试验结果较为一致，验证了建立的有限元模型的合理性。对结构受力全过程典犁时刻、典掣位置处的混凝土及型钢截面应力分布和发展规律进行了分析，揭示了窄腹式SRC异形柱中框架的受力机理，可为这类结构的设计及其工程应用提供参考。
英文摘要：
Based on previous experimental studies, 3-D finite element models were used to analyze the behavior of the lattice steel reinforced concrete middle frame with special-shaped columns subjected to monotonous load. The load-displacement skeleton curves of the structure were calculated and analyzed. The final deformations of the structure and joints were also analyzed. It is shown that the finite element analysis results are in good agreement with those of the experiments, which verified the finite element models built in this paper. The strain distribution and development of concretes and steels at typical sections of the structure were analyzed. The conclusion provides valuable references for the design and engineering application of this kind of structure.
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