钢连梁与钢-混凝土组合剪力墙连接抗震性能研究

发布时间：2018-05-05 23:45

本文选题：钢-混凝土组合剪力墙 + 钢连梁　；参考：《建筑结构学报》2015年09期

【摘要】：为了考察钢连梁与钢-混凝土组合剪力墙肢端板螺栓连接的抗震性能,考虑不同的连梁跨度和组合墙轴压比,设计并制作了4个1/4缩尺钢连梁与钢-混凝土组合剪力墙连接试件,在保持组合墙体恒定轴压力的情况下,对钢连梁施加竖向往复荷载,比较了试件的受力发展过程和最终破坏形态,分析了试件荷载-位移滞回性能、延性、耗能以及刚度退化等受力特征。结果表明:端板螺栓连接形式能够满足钢连梁与组合剪力墙连接区域的承载力、变形与耗能能力需求,承载力与刚度退化不明显;组合剪力墙边缘预埋钢构件与剪力墙其余部分的连接属薄弱部位,应予以加强;轴压比增大时,连接区域混凝土开裂、剥落现象更严重,峰值荷载、位移延性略有提高;连梁跨度增大时,连接区域参与耗能的程度加大,混凝土破坏会更严重。利用有限元分析软件对试件的荷载-位移骨架曲线进行了数值模拟,数值模拟结果与试验结果吻合良好。
[Abstract]:In order to investigate the seismic behavior of steel beam and steel-concrete composite shear wall end plate bolt connection, different span of beam and axial compression ratio of composite wall are considered. Four 1 / 4 scale steel connected beams and steel concrete composite shear wall connection specimens are designed and fabricated, and vertical reciprocating loads are applied to the steel connected beams under the condition of maintaining the constant axial pressure of the composite walls. The load-displacement hysteretic behavior, ductility, energy dissipation and stiffness degradation of the specimens are analyzed. The results show that the end-plate bolt connection can meet the bearing capacity, deformation and energy dissipation capacity of the connection area between steel beam and composite shear wall, and the degradation of bearing capacity and stiffness is not obvious. The connection between the embedded steel members at the edge of the composite shear wall and the rest of the shear wall is weak and should be strengthened. When the axial compression ratio increases, the concrete cracking in the connection area becomes more serious, and the peak load and displacement ductility increase slightly. When the span of connecting beam increases, the degree of energy dissipation in connection area increases, and the concrete damage becomes more serious. The load-displacement skeleton curve of the specimen is simulated by using finite element analysis software. The numerical simulation results are in good agreement with the experimental results.
【作者单位】：重庆大学山地城镇建设与新技术教育部重点实验室;重庆大学土木工程学院;南京工业大学土木工程学院;南加州大学土木与环境工程系;
【基金】：国家自然科学基金项目(51108484) 中央高校基本科研业务费项目(CDJZR12205503)
【分类号】：TU352.11;TU398.9

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