NUMERICAL ANALYSIS OF SEISMIC RESPONSE OF CONTROLLED ROCKING REINFORCED CONCRETE FRAME WITH COLUMN-END-HINGE JOINTS BASED ON STATIC TEST

The controlled rocking reinforced concrete frame with column-end-hinge joints (CR-RCFC) is a new type of function-recoverable structure. Through the construction of rocking joints, the overall lateral stiffness of the structure is weakened to achieve the effect of reducing seismic response. In the shaking table test, the CR-RCFC structure exhibited seismic resilience that "the main components are damage-free and the energy-dissipating devices are easy to replace" under the action of moderate and large earthquakes. After the shaking table test, a low-frequency cyclic loading test was carried out to obtain the mechanic parameters of the column-end-hinge joint of CR-RCFC structure without dampers. The moment-rotation hysteresis curve, the rotational stiffness and the mechanic parameters were obtained by the test and were used for numerical simulation of structural seismic responses. The numerical simulation results and the shaking table test results are compared and analyzed. The comparative results show that the mechanic parameters of CR-RCFC structural joint can be accurately obtained through the static test, and the numerical simulation results based on these parameters are in good agreement with the shaking table test results.