论文部分内容阅读
为研究竖向框排架结构中排架柱的抗震性能,选取一榀典型竖向框排架结构作为研究对象,完成了缩尺比为1∶5的结构模型的拟静力试验,并采用ABAQUS有限元软件对其进行了数值模拟。对竖向框排架结构中排架柱的破坏特征、骨架特性、延性、耗能能力、层间位移角等进行了分析,研究了长细比和轴压比对排架柱抗震性能的影响。结果表明:排架柱的破坏模式为弯曲破坏;由于偏心距较大,不同加载方向下的排架柱的水平承载能力存在较大差别;排架柱的延性和耗能能力随长细比和轴压比的增加显著降低,建议将同类结构的排架柱长细比和轴压比分别控制在45和0.2以下。
In order to study the seismic behavior of frame-columns in vertical frame-framed structures, a typical vertical frame-framed structure was selected as the research object and a quasi-static test of the structural model with scale 1: 5 was completed. ABAQUS finite element software for its numerical simulation. The failure characteristics, the skeleton characteristics, the ductility, the energy dissipation capacity, the drift angle between layers and so on were analyzed. The influence of the slenderness ratio and the axial compression ratio on the seismic behavior of the columns was studied. . The results show that the failure mode of the column is bending failure. Due to the large eccentricity, the horizontal bearing capacity of the column under different loading directions is quite different. The ductility and energy dissipation capacity of the column with the slenderness ratio The increase of axial compression ratio is significantly reduced. It is suggested that the slenderness ratio and axial compression ratio of the similar structure should be controlled below 45 and 0.2 respectively.