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Capacity design for composite partially restrained steel frame‐reinforced concrete infill walls with concealed vertical slits
The Structural Design of Tall and Special Buildings ( IF 2.4 ) Pub Date : 2020-11-13 , DOI: 10.1002/tal.1819
Guohua Sun 1 , Yuehua Hu 1 , Qiang Gu 1 , Yixin Wang 1 , Youzhen Fang 1, 2
Affiliation  

This paper presents an innovative capacity‐based design procedure that aims to achieve the ideal seismic performance for the composite partially restrained (PR) steel frame‐reinforced concrete (RC) infill wall with concealed vertical slits (PSRCW‐CVS). The proposed method adopts the direct capacity design principles and preselected preferred plastic mechanism such that the RC infill wall undergoes ductile failure prior to the other steel components in the event of a rare‐level earthquake (i.e., earthquake with a 2% probability of exceedance in 50 years). Based on the ultimate resisting capacity of RC infill walls, the free‐body diagrams and simplified design formulae for the surrounding steel components, including the vertical boundary element (VBE), horizontal boundary element (HBE), PR connection, and shear connectors, were proposed. To demonstrate the reasonability of the capacity‐based design procedure, a five‐story PSRCW‐CVS structure was designed according to the proposed design method, followed by a series of nonlinear time history analyses. The overall seismic response of this example was evaluated in terms of story displacement, interstory drift ratio, residual story displacement, and residual interstory drift ratio. The proposed method yielded a more uniform interstory drift ratio distribution along the height of the five‐story PSRCW‐CVS structure. Structural damage was controlled by achieving the preselected preferred plastic mechanism.

中文翻译:

带有隐藏式垂直缝的部分约束钢框架钢筋混凝土填充墙的承载能力设计

本文提出了一种创新的基于容量的设计程序,旨在为带有隐藏式垂直缝隙(PSRCW-CVS)的部分约束(PR)钢框架钢筋混凝土(RC)填充墙实现理想的抗震性能。提议的方法采用直接承载力设计原则和预先选择的首选塑性机制,这样,在发生罕见地震(即,在地震中发生概率超过2%的地震)中,RC填充墙比其他钢构件先经历延性破坏。 50年)。根据RC填充墙的极限抗力,绘制了周围钢构件的自由身图和简化的设计公式,包括垂直边界元素(VBE),水平边界元素(HBE),PR连接和剪切连接器建议。为了证明基于容量的设计程序的合理性,根据提出的设计方法设计了五层的PSRCW-CVS结构,然后进行了一系列非线性时程分析。根据层位移,层间位移比,残余层位移和残余层间位移比评估了此示例的整体地震响应。所提出的方法沿五层PSRCW-CVS结构的高度产生了更均匀的层间漂移比分布。通过实现预选的首选塑性机制来控制结构损坏。根据层位移,层间位移比,残余层位移和残余层间位移比评估了此示例的整体地震响应。所提出的方法沿五层PSRCW-CVS结构的高度产生了更均匀的层间漂移比分布。通过实现预选的首选塑性机制来控制结构损坏。根据层位移,层间位移比,残余层位移和残余层间位移比评估了此示例的整体地震响应。所提出的方法沿五层PSRCW-CVS结构的高度产生了更均匀的层间漂移比分布。通过实现预选的首选塑性机制来控制结构损坏。
更新日期:2020-12-17
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