Abstract
In many seismically active regions worldwide, massive reinforced concrete (RC) structures built before the 1970s existed. These older RC buildings, in countries having seismic history, were designed for gravity loads only. Anyway, the beam-column connections influence the structures where the functions of connection shortage by transport the forces like shear, moment, and torsion through the beam to the column. Also, it could behave in a ductile manner to help the structure resist the seismic, as simulate the seismic loading by high and low cyclic loading. Due to the failure of external joints more than the internal beam-column joints, this review focuses on the behavior of exterior beam-column joints under cyclic loading, consequently simulated the behavior under an earthquake and the reinforcement detailed.
Highlights
The high sensitivity of earthquake for beam-column connections in constructions established before 1980 results according to the fact that since the first provisions of seismic design for beamcolumn connections were provided in the 1960s, these provisions were not formally used within the limits of the significant design specifications for ductile frames in the late 1970s [1]
The edition of the Uniform Building Code (UBC) in1976 was the first code that involved the demands of seismic design like the demands of transverse reinforcement in the joint region [2]
This study demonstrates that the fatigue and absorption capacity of the energy could be improved by adjusting the information of steel reinforcement near the exterior beam-column joints, thereby providing improved performance with seismic action
Summary
The high sensitivity of earthquake for beam-column connections in constructions established before 1980 results according to the fact that since the first provisions of seismic design for beamcolumn connections were provided in the 1960s, these provisions were not formally used within the limits of the significant design specifications for ductile frames in the late 1970s [1]. The axial load of the column was 0.05/fc Ag, and the concrete compressive strength was 31.6MPa. Other studied parameters involve joint aspect ratio, shear reinforcement amount in the area of connection, and amount intermediate longitudinal bars of the column. Kotsovou et al [19] suggested a method that is dissimilar from any method suggested to date, does unneeded calibration by using experimental behavior of the joint data, and is found to be adequate for predicting the failure mode of exterior beam-column joint sub-assemblages for more than 90% of the 153 cases examined, as well as safe load carrying capacity predictions of joint Diro and Kabeta [24] performed a nonlinear finite element analysis of RC external beam-column joint exposed to lateral loading to determine the failure mode of shear in terms of deformations, cracking patterns, and shear capacity of the joint by used ABAQUS software. At the concrete crushing stage, the resistance of shear capacity has increased
Sign-in/Register to view highlights & summary 
Published Version (
Free)
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 call