Seismic Behavior of an Inter-story Hinged Lateral Resistance Braced Frame

IF 1 Q4 ENGINEERING, CIVIL

Jordan Journal of Civil Engineering Pub Date : 2023-10-01 DOI:10.14525/jjce.v17i4.10

Yu Ren

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引用次数: 0

Abstract

Based on the deflection behavior of structural components occurring at the lateral deformation of moment frames, a new lateral force-resisting system, the R-BRACE Frame (RBF) system, was proposed. This system is capable of effectively limiting the inter-story drift response of tall buildings. An evaluation was conducted using the finite element method program SAP2000 to simulate the internal force distribution and deformation of the system. The equivalent lateral force procedure (ELFP), the capacity spectrum method (CSM), a linear time-history analysis and the pushover method were applied to assess the yielding mechanism of the structure under different earthquake intensity levels. The findings revealed that the sub-unit, referred to as an R-BRACE, had a major impact on improving a structure's lateral stiffness. The placement of R-BRACE units could guarantee controllable stiffness degradation and enhanced seismic ductility, but would not alter the vertical load transfer path of the initial structure, which makes the RBF system an ideal option for seismic retrofitting. KEYWORDS: Lateral force-resisting system, R-BRACE frame, Enhanced lateral stiffness resistance, Seismic ductility

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层间铰接横向阻力支撑框架的抗震性能

基于结构构件在弯矩框架横向变形时的挠度特性，提出了一种新的抗侧力体系——r -支撑框架体系。该系统能够有效地限制高层建筑的层间漂移响应。利用SAP2000有限元软件对系统的内力分布和变形进行了仿真分析。采用等效侧向力法(ELFP)、容量谱法(CSM)、线性时程法和推覆法对不同烈度下结构的屈服机理进行了分析。研究结果表明，被称为R-BRACE的亚单元对提高结构的横向刚度有重大影响。R-BRACE单元的放置可以保证可控的刚度退化和增强的地震延性，但不会改变初始结构的垂直荷载传递路径，这使得RBF系统成为抗震改造的理想选择。关键词:抗侧力体系，r -支撑框架，抗侧刚度增强，抗震延性

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来源期刊

Jordan Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

2.10

自引率

27.30%

发文量

期刊介绍： I am very pleased and honored to be appointed as an Editor-in-Chief of the Jordan Journal of Civil Engineering which enjoys an excellent reputation, both locally and internationally. Since development is the essence of life, I hope to continue developing this distinguished Journal, building on the effort of all the Editors-in-Chief and Editorial Board Members as well as Advisory Boards of the Journal since its establishment about a decade ago. I will do my best to focus on publishing high quality diverse articles and move forward in the indexing issue of the Journal.