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基于能量抗震设计需解决的一个重要问题是确定结构累积滞回耗能的分布。该文通过两个具有不同跨高比连梁的钢筋混凝土框架-联肢剪力墙结构,选用一定数量的地震波进行弹塑性动力时程分析,研究了框架-联肢剪力墙结构在地震作用下的累积滞回耗能分配和分布规律。分析研究结果表明:当连梁跨高比合适,可以实现强墙弱(连)梁的屈服模式,连梁可以承担绝大部分耗能,框架梁也可以承担部分耗能,从而降低墙肢的耗能比例,减轻墙肢损伤程度。同时,不同频谱特性地震波虽然不会影响结构中各构件的耗能比例分配,但是会影响各构件的耗能分布模式,因此在确定各构件的层耗能需求时,需要考虑不同耗能分布模式的影响。
An important issue to be solved based on energy seismic design is to determine the distribution of cumulative hysteresis energy dissipation. In this paper, through elastic-plastic dynamic time-history analysis of a certain number of seismic waves by using two reinforced concrete frames-associated shear wall structures with different span-to-beam connections, the effects of seismic action of frame-associated shear wall structures Under the cumulative hysteresis energy distribution and distribution. The analysis and research results show that when the span ratio of the spar is appropriate, the yield mode of the weak beam can be achieved, even the spar can bear most of the energy, and the frame beam can also take part of the energy dissipation, Energy ratio, reduce the degree of damage to the wall limbs. At the same time, although different spectral characteristics of seismic waves will not affect the proportion of energy consumption of each component in the structure, it will affect the energy consumption distribution mode of each component. Therefore, when determining the layer energy consumption requirements of each component, different energy consumption distribution modes Impact.