Analytical Study of Simple Replaceable Fuse (SRF) in Eccentrically Braced Frames

Subject Areas :

Soroush Soltani ¹ , Mohammad Reza Javaheri-tafti ² , Mohammad-Ghasem Vetr ³

1 - Department of Civil Engineering,Taft Branch, Islamic Azad University, Taft, Iran
2 - Department of Civil Engineering,Taft Branch, Islamic Azad University, Taft, Iran
3 - International Institute of Earthquake Engineering & Seismology (IIEES), Tehran, Iran

Received: 2023-07-01 Accepted : 2023-09-18 Published : 2022-12-01

Keywords: link beam, Eccentric Bracing, EBF System, Structural Fuse, Joint Connection,

Abstract :

The lateral bracing frames are one of the common and earthquake-resistant systems. These frames were originally used to withstand wind forces, and were later developed to withstand lateral forces caused by earthquakes. One of the most important lateral bracing systems are eccentric braced frames (EBF). In this investigation, the behavior of eccentrically braced frames with Interchangeable link beam has been studied. Unlike other past researches, in addition to paying attention to the proper function of the fuse in the structure, the researchers have put the simplicity of its construction and easy replacement on the agenda. In this system, the link beam is connected to the out-of-link beam using a pin connection, so that it can be easily interchanged while exhibiting a fully shear behavior. In order to achieve the desired results, eccentric frame design has been done by ETABS software and analysis by ABAQUS software. The results of the research show that the use of pinned link beam, in addition to its impressive performance against lateral force, due to its simple interchangeability, the reconstruction time of the structure after the earthquake has been greatly reduced and the structure can be restored in the shortest possible time to the usable state.