摘要
通过对9个不同结构特性的钢筋混凝土框架-核心筒结构,选用一定数量的地震波进行时程分析,研究了此类结构在地震作用下的总输入能及其在滞回耗能和阻尼耗能之间的分配规律,以及滞回耗能在构件及层间的分布规律。研究表明,随着地震动幅值的增大,滞回耗能比也随之增加;不同频谱特性的地震波对滞回耗能影响较大;刚度特征值对结构总滞回耗能影响不大,但对构件的耗能分配具有较大影响;结构滞回耗能主要集中于底层剪力墙和中部连梁处。
Abstract
Elastio-plastic dynamic analyses of 9 reinforced concrete frame-core wall structures with different structural characteristics were carried out under several sets of ground motions. The earthquake total input energy of the structure under ground motion, and the regularity of the total input energy between hysteretic energy and damping energy were discussed; the distribution of hysteretic energy among shear wall, coupling beams and frames were studied, as well as the distribution of hysteretic energy along different stories. The results show that the hysteretic energy is increased with the peak ground acceleration. The earthquake records with different spectrum characteristics have a great influence on hysteretic energy. Although the total hysteretic energy among different structural members are steady, the distribution of hysteretic energy among shear wall, coupling beams and frames may vary significantly. It is found that the bottom portion of shear walls and coupling beams in middle floors are the predominant energy dissipated area.
关键词
钢筋混凝土框架核心筒 /
能量反应 /
滞回耗能 /
结构特性
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Key words
reinforced concrete frame-core wall /
energy response /
hysteretic energy /
structural characteristics
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李 坤;史庆轩.
钢筋混凝土框架-核心筒结构地震反应能量分析[J]. 振动与冲击, 2014, 33(8): 115-119
LI Kun;SHI Qing-xuan.
Analysis on seismic energy response of reinforced concrete frame-core wall[J]. Journal of Vibration and Shock, 2014, 33(8): 115-119
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脚注
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