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首页> 外文期刊>Bulletin of earthquake engineering >Assessing and quantifying the earthquake response of reinforced concrete buckling-restrained brace frame structures
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Assessing and quantifying the earthquake response of reinforced concrete buckling-restrained brace frame structures

机译：评估和量化钢筋混凝土屈曲束缚支架框架结构的地震响应

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摘要

Due to the stable hysteretic behavior, buckling-restrained braces (BRB) have been increasingly adopted in reinforced concrete (RC) frame structures to develop a dual structural system. This investigation aims to quantify the seismic behavior of newly-constructed reinforced concrete BRB frames (RC-BRBFs). The force-deformation characteristic of dual RC-BRBFs is firstly presented and the yield displacement is derived using the story shear ratio resisted by BRB system. The seismic design procedure of dual systems for different BRB configurations (including single diagonal, V-type and inverted V-type), is developed using the performance-based plastic design approach by considering BRB postyield behavior, design target drift and global yield mechanism. 126 RC-BRBF structures corresponding to different story numbers, BRB configurations and story shear ratios are designed. The influence of story shear ratios on the design results is analyzed. The seismic response of structures subjected to 22 ground motions is investigated and compared in terms of yield mode, maximum interstory drift ratio, BRB maximum ductility and cumulative ductility, and residual drift ratio. The relationship between actual and design normalized story shear of BRBs is demonstrated and a fitting equation is proposed to quantify the actual story shear ratios. The analytical results of the present study can provide quantified insights to the seismic design of RC-BRBF structures.
机译：由于稳定的滞后行为，屈曲束缚的括号（BRB）越来越多地采用钢筋混凝土（RC）框架结构来开发双结构系统。本研究旨在量化新建的钢筋混凝土BRB框架（RC-BRBFS）的地震行为。首先呈现双RC-BRBFS的力变形特性，并且使用BRB系统抵抗的故事剪切率来导出产量位移。通过考虑BRB Postyield行为，设计目标漂移和全球产量机制，使用基于性能的塑料设计方法进行不同BRB配置的双系统的地震设计程序（包括单对角线，V型和倒置V型）。设计了对应于不同故事编号的RC-BRBF结构，BRB配置和故事剪切比对应。分析了故事剪切比对设计结果的影响。在屈服模式，最大颠覆漂移比，BRB最大延展性和累积延展性和残留漂移率方面，研究了对22种研磨的结构的地震反应。 BRBS的实际和设计归一化故事剪切之间的关系被证明，提出了一种拟合方程来量化实际的故事剪切比。本研究的分析结果可以为RC-BRBF结构的地震设计提供量化的洞察。

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