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首页> 外文期刊>Bulletin of earthquake engineering >Performance-based plastic design of composite partially-restrained steel frame-reinforced concrete infill walls with concealed vertical slits
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Performance-based plastic design of composite partially-restrained steel frame-reinforced concrete infill walls with concealed vertical slits

机译：基于性能的复合部分限制钢框架钢筋混凝土填充墙体的塑料设计，具有隐藏式垂直狭缝

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摘要

In order to reasonably predict the seismic demand of composite partially-restrained steel frame-reinforced concrete (RC) infill walls with concealed vertical slits (PSRCW-CVS) subjected to the near-fault earthquake records with strong velocity-pulse effect, an innovative performance-based plastic design (PBPD) approach is developed in current study. The maximum effective cyclic energy (MECE), which can reflect this phenomenon that the structural dissipated input energy from near-fault pulse earthquake record commonly focuses on the largest yield excursion, is introduced and adopted as a new design indicator (Delta E-h,E-max). The design base shear is determined according to the instantaneous energy balance concept and pre-selected desirable yield mechanism, which considers that the MECE demand obtained from MECE spectrum at target ductility ratio is equivalent to the instant energy supply from structural components. Additionally, the MECE calculating formula of each component of PSRCW-CVS structure is also provided. Four PSRCW-CVS illustrations (5-storey and 10-storey) with different target ductility ratio were designed according to the proposed PBPD methodology, and their seismic behaviors corresponding to the rare earthquake level were assessed through nonlinear time-history analysis method using the selected near-fault earthquake records with velocity-pulse effect. The analytical results show that four PSRCW-CVS structures can achieve the intended seismic behavior in terms of MECE, inter-story drift ratio, and residual inter-story drift ratio. The PSRCW-CVS structure exhibits the ideal progressively developed plastic mechanism. The reliability and reasonability of this PBPD method combined with MECE spectrum are verified, and it can be easily extended to other dual lateral load resisting systems.
机译：为了合理地预测复合部分限制钢框架增强混凝土（RC）填充壁的抗震性能，具有隐藏的垂直狭缝（PSRCW-CVS），经受近乎故障地震记录具有强烈的速度脉冲效应，这是一种创新性能基于当前研究开发的塑料设计（PBPD）方法。最大有效的循环能量（MECE），它可以反映这种现象，即近端故障脉冲地震记录的结构耗散输入能量通常侧重于最大的产量偏移，并被用作新的设计指标（Delta eh，E-最大限度）。根据瞬时能量平衡概念和预选的期望屈服机制确定设计底剪，这考虑了从目标延展性比以MECE光谱获得的MECE需求相当于来自结构部件的瞬间能量供应。另外，还提供了PSRCW-CVS结构的每个组件的MECE计算公式。根据所提出的PBPD方法设计具有不同目标延展性比的四个PSRCW-CVS插图（5层和10层），并且通过使用所选的非线性时间历史分析方法评估与罕见地震水平相对应的地震行为具有速度脉冲效应的接近故障地震记录。分析结果表明，四个PSRCW-CVS结构可以在MECE，故事间漂移比和剩余间漂移比方面实现预期的地震行为。 PSRCW-CVS结构呈逐步开发的塑料机制。验证了该PBPD方法的可靠性和合理性与MECE光谱结合，并且可以很容易地扩展到其他双横向负载抵抗系统。

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