Seismic Performance of Interior Beam-Column Joint With Fuse-Bar Designed Using Ec8 Under In-Plane Lateral Cyclic Loading

Abstract

The paper focuses on the seismic performance of interior beam-column joint with fuse-bar subjected to in-plane lateral cyclic loading through experimental work. Sub-assemblage of interior beamcolumn joint of moment resisting frame was designed in accordance to Eurocode 8, constructed and tested in laboratory. Three beams were connected to the column and equipped with eight numbers of fuse-bars acting as energy dissipators which were located at centre of the joint. The specimen was tested under in-plane lateral cyclic loading by applying the lateral load at top of the column and tested up to ±2.50% drift. The seismic performance of the joint was analyzed and examined in terms of damage visual observation after testing, the behaviour of hysteresis loops, ultimate load carrying capacity, stiffness, ductility and equivalent viscous damping. By placing fuse-bars at the interior joint and designed the structures in accordance with Eurocode 8 under Ductility Class Medium (DCM) for strong column-weak beam condition, it is expected that the specimen will survive under moderate or strong earthquake. From visual observation more cracks were observed at the in-plane beam and less cracks were observed on the column. Experimental result shows that the beam-column joint has higher lateral strength capacity, stiffness, equivalent viscous damping and displacement ductility of 3.7 which can be classified under moderate ductility. Therefore, this building which are designed using Eurocode 8 will survive under moderate or strong earthquake.