曹  倩，  汪  洋，  赵  宏
    （奥雅纳工程顾问深圳公司，深圳 5180480

[摘要] 为保证框架-核心筒结构体系多道抗震防线之概念设计，各国规范对内外筒剪力分配都有定量要求。然而这种要求的本质是即使结构构件部分有损伤，整体结构也能够保证共同作用且能够有效地进行内力重分布，并满足预定的结构抗震性能目标，特别对复杂和新型结构体系，这种设计概念更加重要。以超限高层巨型框架核心筒结构体系为例，通过性能化抗震设计方法，论证了巨型框架．核心筒结构在大震作用下内外筒协调工作，内外筒剪力能够重新分布，并满足预设之抗震性能目标。
[关键词] 内外筒剪力分配；巨型框架；多道防线；性能化抗震设计
中图分类号：TU375    文献标识码：A  文章编号：1002-848X(2011) Sl-0331-05

Discussion on the dual defense system applied in structurally complicated high-rise building
    Cao Qian,Wang Yang, Zhao Hong
    (Ove Arup&Partners Ltd Shenzhen Branch, Shenzhen 518048, China)

Abstract: For frame-core wall system, the seismic shear force distribution among the frame and core wallis supposed to meet quantitative requirements in Chinese and foreign seinuc codes to ensure the enough load capacity and stiffness of the frames. The purpose of these requirements is to achieve the internal force redistribution among frames and core wall after the stiffness degradation of shear walls under seismic effects, then the target performance level can be satisfied. This concept is important, especially for structurally new and complicated systems. A design example of a mega frame-core wall structural system is demonstrated to validate that the target performance level can be reached by the interaction and the intemal force redistribution among the frames and core wall under the largest earthquake shaking.
Keywords: shear force distribution among frame/core wall; mega frame-core wall system; multi-line to defend
earthquake; performance-based seismic design