International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 07 Issue: 05 | May 2020 www.irjet.net p-ISSN: 2395-0072 © 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 3985 COMPARATIVE STUDY OF BEHAVIOUR OF STEEL BEAM-COLUMN JOINT WITH DIFFERENT MODES OF CONNECTIONS MAYURI P. GALE 1 , DR. SUDHIR P. PATIL 2 1 PG student, Civil (Structural Engineering), Maharashtra Institute of Technology-WPU, Pune, M.H. India 2 HOD, Civil (Structural Engineering), Maharashtra Institute of Technology-WPU, Pune, M.H. India ------------------------------------------------------------------------***------------------------------------------------------------------------- ABSTRACT: Beam-column joint plays an important role in the response of a steel moment resisting framed structure. Generally, beam-column joint is the portion of the column that is common at the intersection to both the column and beam. Because of the poor performance of pre-Northridge moment connections, the researchers investigated the causes of failure and developed alternative connections for repair, rehabilitation and new construction. In this study, the behaviour of beam- column joint with different modes of connections studied analytically using finite element analysis and experimentally using loading frame with respect to ductility and plastic hinge formation. Four types of connections i.e. connection using weld, using stiffeners like cleat angle and plate, using haunches and by using combination of both stiffeners and haunches were used with standard ISMB steel section, plate forming I section and moreover with tube section. Modelling of the beam-column joint with different connections were done in finite element software named ANSYS – WORKBENCH 2019. The aim of this study is to work out the best behaviour of connections. Experimentally total six specimens with and without stiffening are prepared for testing. Quasi static test performed on the beam column joint using loading frame. Experimental work is validated with analytical results obtained by FE analysis. KEYWORDS: Beam-Column Joints, Quasi static test, Finite Element Analysis, Von Mises stress, ANSYS – WORKBENCH software. 1. INTRODUCTION In 1995, after the Northridge and Kobe earthquakes, brittle fracture occurred in large numbers to the connections which was commonly used connection for steel moment resisting frames before the earthquake. It caused many high-rise steel structures to break and collapse. Research has shown that the cracking of weld under static and cyclic loading has damaged the connections and reduction in stiffness and brittle failure of the connection occurred. In response to this, many solutions to the moment resisting connections have proposed. Either strengthening beam- column connection by the addition of stiffeners like cleat angle, cover plates, ribs or haunches or reducing the beam cross- section away from the column face. Reduced beam section (RBS) is one of the connection types, which is economical and popular for use in new steel moment frame structures. To form RBS connection, some portion of the beam flanges reduced from column face so that the yielding and plastic hinge occurs within this area of flanges. Use of RBS connection found advantageous. Strong-column weak-beam requirement is also satisfied. In the Quasi-static test, the rate of application of load is very low so that the material strain-rate effects do not influence the structural behaviour of beam column joint and there is no formation of inertia forces. The loading pattern should be chosen to provide the full range of deformations that the structures would experience under the static loading. This method adequately captures the hysteresis behaviour, energy dissipation, stiffness degradation, ductility, hysteretic damping, the most distressed zone, lateral strength and deformation capacity. Most of the Semi-rigid joints are given with high-strength bolts. Recently, extensive and increasing studies has carried out on the high strength bolted joints in steel structures. The issues in high strength bolted joint as compared with welded joint are the stiffness, complex behaviour, ductility and mainly the construction cost. It is therefore of practical importance to investigate the real behaviour of joints with respect to some rational test. ANSYS simulation software gives designers the ability to access the influence of the range of variable in virtual environment. We can advance through the design and materials selection process quickly and efficiently. ANSYS still gives the user through coupled Rock and soil mechanics analysis; material specific maximum load assumptions; linear, nonlinear, static and dynamic analysis; sensitivity and parametric studies; and other related work, which together provide significant insight into design behaviour that would be difficult with single analysis runs.