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本文研究了某带加强层框架-核心筒结构,利用有限元软件Midas building分别建立设置两道加强层的模型1、模型2和模型3,三种模型的区别在于加强层的楼层位置不同。通过在多遇地震作用下的弹性分析比较三个模型的周期比、层间位移角和位移比,结果表明模型2较之可以更有效地降低层间位移角突变,使得结构的受力更加均匀,不容易形成薄弱层,有效地缓解了刚度突变,有利于结构抗震。
In this paper, a reinforced frame-core-tube structure is studied. The finite element software Midas building is used to establish models 1, 2 and 3, respectively. The difference between the three models lies in the different floor positions of the reinforcement layer. The cyclic ratio, interlayer displacement angle and displacement ratio of the three models were compared by elastic analysis under the condition of frequent earthquakes. The results show that Model 2 can reduce the inter-layer displacement angle mutation more effectively and make the stress of the structure more uniform , It is not easy to form a weak layer, effectively ameliorating the sudden change in stiffness, is conducive to structural seismic.