Assessing and quantifying the earthquake response of reinforced concrete buckling-restrained brace frame structures
Assessing and quantifying the earthquake response of reinforced concrete buckling-restrained brace frame structures
复制标题
评估和量化钢筋混凝土屈曲约束支撑框架结构的地震响应
DOI：
10.1007/s10518-019-00633-0
复制
发表时间：
2019-07
影响因子：
4.6
通讯作者：
Ou Jinping
中科院分区：
文献类型：
--
作者：
Bai Jiulin;Cheng Feng;Jin Shuangshuang;Ou Jinping
屈曲约束支撑（BRB）由于其稳定的滞回性能，被越来越多地应用于钢筋混凝土框架结构中，形成了一种双重结构体系。本研究旨在量化新建钢筋混凝土防屈曲支撑框架（RC-BRBFs）的抗震性能。首先分析了双钢筋混凝土防屈曲支撑的受力-变形特性，并利用层间剪力比推导了双钢筋混凝土防屈曲支撑的屈服位移。采用基于性能的塑性设计方法，考虑BRB的后屈服行为、设计目标漂移和整体屈服机制，开发了不同BRB结构（包括单对角线、V型和倒V型）的双体系抗震设计程序。设计了126个对应不同层数、防屈曲支撑配置和层间剪力比的RC-BRBF结构。分析了层间剪力比对设计结果的影响。研究了22种地震动作用下结构的地震反应，并从屈服模态、最大层间位移比、防屈曲支撑的最大延性和累积延性以及残余位移比等方面进行了比较。论证了防屈曲支撑的实际层剪力与设计层剪力之间的关系，并提出了一个拟合公式来量化实际层剪力比。本文的分析结果可为钢筋混凝土防屈曲梁结构的抗震设计提供量化的依据。
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.
登录
查看更多内容
影响因子：
4.5
作者：
L. Di Sarno;G. Manfredi
通讯作者：
L. Di Sarno;G. Manfredi
影响因子：
5
作者：
S. Chao;S. Goel;Soon-Sik Lee
通讯作者：
S. Chao;S. Goel;Soon-Sik Lee
DOI：
10.1061/9780784404454
发表时间：
1990
期刊：
--
影响因子：
--
作者：
E. Cohen
通讯作者：
E. Cohen
影响因子：
4.5
作者：
C. Chou;Jia-hua Liu;D. Pham
通讯作者：
C. Chou;Jia-hua Liu;D. Pham
DOI：
--
发表时间：
2011
期刊：
Journal of Building Structures
影响因子：
--
作者：
Wu Na
通讯作者：
Wu Na