竖向框排架结构中排架柱抗震性能研究
发布时间：2018-11-06 12:24
【摘要】：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。
[Abstract]:In order to study the seismic behavior of bent columns in vertical frame bent structure, a typical vertical frame bent structure is selected as the research object, and the quasi-static test of the structural model with a scale ratio of 1:5 is completed. ABAQUS finite element software is used to simulate it. The failure characteristics, skeleton characteristics, ductility, energy dissipation capacity and interstory displacement angle of bent columns in vertical frame bent structures are analyzed, and the effects of aspect ratio and axial compression ratio on seismic performance of columns are studied. The results show that the failure mode of bent columns is bending failure and the horizontal bearing capacity of bent columns under different loading directions is different due to the large eccentricity. The ductility and energy dissipation capacity of bent columns decrease significantly with the increase of slenderness ratio and axial compression ratio. It is suggested that the slenderness ratio and axial compression ratio of similar structures should be controlled below 45 and 0.2 respectively.
【作者单位】： 北京工业大学工程抗震与结构诊治北京市重点实验室;中国电力工程顾问集团西北电力设计院有限公司;
【基金】：国家自然科学基金面上项目(51478023) 北京市教委科技计划面上项目(KM201110005021)
【分类号】：TU352.11;TU375
本文编号：2314249
[Abstract]:In order to study the seismic behavior of bent columns in vertical frame bent structure, a typical vertical frame bent structure is selected as the research object, and the quasi-static test of the structural model with a scale ratio of 1:5 is completed. ABAQUS finite element software is used to simulate it. The failure characteristics, skeleton characteristics, ductility, energy dissipation capacity and interstory displacement angle of bent columns in vertical frame bent structures are analyzed, and the effects of aspect ratio and axial compression ratio on seismic performance of columns are studied. The results show that the failure mode of bent columns is bending failure and the horizontal bearing capacity of bent columns under different loading directions is different due to the large eccentricity. The ductility and energy dissipation capacity of bent columns decrease significantly with the increase of slenderness ratio and axial compression ratio. It is suggested that the slenderness ratio and axial compression ratio of similar structures should be controlled below 45 and 0.2 respectively.
【作者单位】： 北京工业大学工程抗震与结构诊治北京市重点实验室;中国电力工程顾问集团西北电力设计院有限公司;
【基金】：国家自然科学基金面上项目(51478023) 北京市教委科技计划面上项目(KM201110005021)
【分类号】：TU352.11;TU375
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