摘要:通过案例分析，讨论了框架－核心筒结构体系在地震中连梁能否有效发生破坏耗能对双重抗震防线、以及对整体结构抗震性能的影响规律。结果显示，连梁对整体结构抗震性能影响非常关键，其刚度退化是导致地震力降低的主要因素；外框柱在芯筒发生严重破坏之前和之后承载能力均较难有效发挥，其阻止芯筒发生严重破坏的效果很弱；在双重防线设计中，可将重点放在芯筒本身二道防线的设计，从而弥补在芯筒和外框柱之间双重防线的设计困难和不足。

Abstract: According to the cases, the influence law of coupling beam's damage to the double earthquake fortification lines of frame-core wall system and its seismic performance is discussed.The results show that the coupling beam's damage is a major factor in reducing seismic forces, and the external columns are difficult to give full play to the seismic capacity before and after the core wall's severe damage.In the double earthquake fortification lines' design work, more attention should be paid on the core wall's double earthquake fortification lines, thus, it can make up the deficiency of outer frame.