方钢管混凝土框架内置两侧开洞薄钢板剪力墙的抗震性能研究

发布时间：2018-04-27 19:46

本文选题：方钢管混凝土框架 + 薄钢板剪力墙　；参考：《工程力学》2017年03期

【摘要】：分别对单跨2层1/3比例的方钢管混凝土框架内置两侧开洞薄钢板剪力墙和未开洞薄钢板剪力墙进行了低周反复荷载试验,对比分析了方钢管混凝土框架内置薄钢板剪力墙的受力机理和破坏机制。采用有限元软件ABAQUS对试验试件进行了非线性数值分析,并将数值分析结果与试验结果进行对比,研究其抗震性能。结果表明:方钢管混凝土框架内置两侧开洞和未开洞薄钢板剪力墙均具有较高的承载力、良好的耗能能力和刚度,破坏机制符合"弱板强框架"的抗震理念,基本达到双重抗震设防目标。利用有限元足尺模型研究了钢板剪力墙开洞率、轴压比对结构抗震性能的影响,结果表明:开洞率的增大使结构承载力和耗能能力减小,但对刚度退化影响较小;轴压比对结构承载力、滞回耗能和刚度退化等影响很小。
[Abstract]:The low cycle cyclic loading tests were carried out on the thin steel plate shear wall and the thin steel plate shear wall with two holes in the concrete filled square steel tube frame with a ratio of 1 / 3 of a single span to two stories. The stress mechanism and failure mechanism of thin steel plate shear wall in concrete filled square steel tube frame are compared and analyzed. The nonlinear numerical analysis of the test specimen is carried out by using the finite element software ABAQUS, and the seismic performance of the specimen is studied by comparing the numerical analysis results with the experimental results. The results show that both sides of square steel tubular concrete frame have high bearing capacity, good energy dissipation capacity and stiffness, and the failure mechanism accords with the aseismic idea of "weak plate and strong frame". The target of dual seismic fortification is basically achieved. Based on the finite element full-scale model, the influence of opening ratio and axial compression ratio on the seismic performance of steel plate shear wall is studied. The results show that the increase of the opening ratio decreases the bearing capacity and energy dissipation capacity of the structure, but has little effect on the stiffness degradation. Axial compression ratio has little effect on bearing capacity, hysteretic energy dissipation and stiffness degradation.
【作者单位】：西安建筑科技大学土木工程学院;重庆大学土木工程学院;成都基准方中建筑设计有限公司;
【基金】：国家自然科学基金项目(51108369) 陕西省科技新星科研项目(2013KJXX-54) 住房与城乡建设部科学技术项目(2014-K2-007)
【分类号】：TU398.9

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