同心偏心支撑加固钢筋混凝土框架试验研究

Q3 Engineering

Journal of Rehabilitation in Civil Engineering Pub Date : 2020-02-01 DOI:10.22075/JRCE.2019.16055.1301

A. Hemmati, A. Kheyroddin, M. Farzad

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引用次数: 7

摘要

在钢筋混凝土框架上加钢支撑是这些结构抗震修复的常用方法。由于易于安装和在支撑槽中创建开口的可能性，这种修复方法比使用剪力墙更受欢迎。本文构建了钢筋混凝土框架、同心支撑框架和偏心支撑框架3个试验试件，并对其循环性能进行了研究和比较。结果表明:同心支撑和偏心支撑混凝土框架的极限荷载分别是钢筋混凝土框架的2.11倍和1.9倍;偏心支撑修复框架的延性也高于钢筋混凝土框架和同心支撑修复框架。偏心支撑和同心支撑修复框架的吸收能量分别是混凝土框架的1.98倍和1.63倍。

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Experimental Study of Reinforced Concrete Frame Rehabilitated by Concentric and Eccentric Bracing

Adding steel braces to reinforced concrete frames is a common way for seismic rehabilitation of these structures. Due to ease of installation and the possibility of creating openings in the braced bays, this method of rehabilitation has been more preferred than using shear walls. In this paper, three experimental specimens including a reinforced concrete frame, a reinforced concrete frame with concentric bracing and a reinforced concrete frame with eccentric bracing are constructed and their cyclic behavior investigated and compared with each other. Results show that the ultimate loads of the both concrete frames with concentric and eccentric braces are about 2.11 and 1.9 times more than that of reinforced concrete frame, respectively. Ductility of rehabilitated frame by eccentric bracing is more than that of reinforced concrete frame and rehabilitated frame by concentric bracing too. Moreover, the absorbed energy of the rehabilitated frames with eccentric and concentric bracing is about 1.98 and 1.63 times more than that of concrete frame.

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来源期刊

Journal of Rehabilitation in Civil Engineering Engineering-Building and Construction

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

12 weeks