STRENGTH AND BEHAVIOUR OF EXTERIOR BEAM COLUMN JOINTS WITH DIAGONAL CROSS BRACING BARS

The present work aims to study the seismic performance of exterior beam column joint with non-conventional reinforcement detailing. Four joint sub assemblages were tested under reverse cyclic loading applied at beam end. The specimens were sorted into two groups based on the joint reinforcement detailing. The first group (Group A) comprises of two joint assemblages having joint detailing as per construction code of practice in India (IS 456:2000) with two axial load cases. The second group (Group B) comprises of two specimens having additional cross bracing reinforcements for the joints detailed as per IS 456:2000 with similar axial load cases that in first group. The experimental investigations are validated with the analytical studies carried out by finite element models using ANSYS. The experimental results and analytical study indicate that additional cross bracing reinforcements improves the seismic performance.