This study presents a new strategy to enhance the seismic performance of self-centering concentrically braced frames (SCCBFs). A hybrid strategy, which combines a SCCBF with a moment-resisting frame or buckling-restrained-braced frame, is first investigated, which show evident reduction in peak deformation demands. This benefit further inspires the design of multi-story pure SCCBFs with the enhanced post-yield stiffness ratio and/or energy dissipation factor directly. Incremental dynamic analyses indicates that the advanced SCCBFs achieve seismic peak deformation control comparable to that of the hybrid systems. Meanwhile, the advanced SCCBFs are nearly damage-free and fully recoverable after significant earthquakes, and thus represents a more favorable strategy from the seismic resilience perspective.

中文翻译：

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通过使用混合系统来增强自定心同心支撑框架的抗震性能

这项研究提出了一种提高自定心同心支撑框架（SCCBFs）抗震性能的新策略。首先研究了一种将SCCBF与抗弯框架或屈曲约束支撑框架相结合的混合策略，该策略显着降低了峰值变形需求。此优点进一步启发了直接使用具有增强的屈服后刚度比和/或能量耗散因子的多层纯SCCBF的设计。增量动力分析表明，先进的SCCBF可以实现与混合动力系统相当的地震峰值变形控制。同时，先进的SCCBFs在发生重大地震后几乎没有损坏并且可以完全恢复，因此从抗震性的角度来看，这是一种更有利的策略。