Joint is strengthened using jacketting and gravity load is applied to it. Cyclic load is applied like given below :

The test was carried out in two phases: in the first

one, the gravity load on beams was controlled by force control. In the

second phase, this was controlled by moving beams. Thanks to this

combination of phases, the gravity load on beams remained constant

throughout the first phase and the first cycles of the second phase, in

which the algebraic sum of loads on beams equalled the sum of the

gravity loads on beams.

In the second phase, as movements increased and non-linear effects

began to be noted, the algebraic sum gradually declined with the

degradation of beam stiffness.

Each cycle was repeated 3 times to detect whether or not degradation

increased with each repetition. In the first phase, the

loading rate was 0.33 kN/s at opposite beam ends until drift ratio values

of 0.25%, 0.50% 0.75% and 1.00% were obtained. In the second phase,

control was achieved by imposing displacement with a 120-second

period per cycle and with a raising drift ratio of 0.50% until specimen failure occurred. By mixing the tests in this way, the gravity load

is kept constant during the first phase and plastic redistribution of forces

is allowed during the second phase. A 1% Drift ratio value

was chosen to establish the change of the phase while the beam-column

joints are still relatively undamaged.