Abstract
Abstract This paper proposes a new beam to column connection which has slit dampers to increase ductility and moment capacity of structures. After Northridge and Kobe earthquakes, many researchers have tried to achieve more ductile connections. Ductility of connections causes to dissipate more energy before failure of connections. Also, some researchers have tried to find methods that plastic hinge occurs out of the beam to column connection zone. The proposed detail connects beam to column by two I-shape slit dampers. One experimental specimen of the proposed connection was tested under cyclic loading. Based on the experimental results, the connection has high seismic performance and rotational capacity more than 0.04 radians. Also, the slit damper connection has more moment capacity than other common connections and indicates a good hysteretic behavior. Experimental observations showed that no cracks and fractures occurred in welds and high energy absorption of the slit dampers prevented damages of other parts. Also, local buckling didn’t occur on the flanges and web of the beam. The column and beam remain in elastic state. Some numerical models were made in ABAQUS software. Analysis results had good agreement with experimental results and showed high energy dissipation and ductility in the proposed connection.
Highlights
After the 1994 Northridge and the 1995 Kobe earthquakes, researchers tend to invent ductile connections which plastic hinge doesn’t occur near the connection zone
The FE models require to compare with experimental data. This approach can determine the accuracy of numerical modeling, so experimental and numerical studies on a new type of connection have been done in this research
The numerical model of the specimen was made by ABAQUS software
Summary
After the 1994 Northridge and the 1995 Kobe earthquakes, researchers tend to invent ductile connections which plastic hinge doesn’t occur near the connection zone. Before Northridge and Kobe earthquakes, some experimental studies had been conducted on common steel connections by Popov and Tsai 1989 and Engelhardt and Husain 1993. After 1994, some experimental studies have conducted on ductile steel connections. Englehardt et al 1997 introduced a reduced beam section RBS to increase the ductility of connections. The RBS connection causes to create plastic hinge out of the connection zone. Reduced beam section can be made by cutting or drilling some parts of the flanges. The reduction of beam section can be made in the beam web. Chen and Lin 2013 studied tapered beam flanges Accordion-web connection was introduced by Mirghaderi et al 2010 . Chen et al 2005 strengthened connections by reinforced beams. Chen and Lin 2013 studied tapered beam flanges
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
