Effect of joint details on the behavior of RC beam column connections subjected to reversed cyclic loading

Abstract EN

This study summarizes the test results of six half scale reinforced concrete beam-column connections subjected to reverse cyclic loading up to failure.

The main parameter among the tests specimens was the joint shear reinforcement details.

Five specimens included different joint shear reinforcement details and one without any shear reinforcement.

The reinforcement details included U-shaped stirrups, joint crossbars, and closed stirrups.

Test results indicated superior behavior for specimens with closed stirrups over other joint reinforcement details.

In addition, the accuracy of some mechanical models against tests results was assessed.

Two models provided accurate joint shear strength predictions while other models either over or underestimated the capacity of the connections.

Vollum model accurately predicted shear strength of the joint without shear reinforcement.

Tran model accurately predicted the ultimate joint shear strength of the joints with closed stirrups.

All models overestimated the shear strength of joints with U-shaped stirrups.