Experimental study on seismic performance of a fabricated structure based on recycled concrete

In order to study the low cost seismic and energy saving structure system，the mechanical properties of recycled concrete with construction waste as aggregate were tested. A pseudo-static test was carried out on the recycled concrete shear wall，the bearing capacity，failure pattern and hysteresis characteristics of the recycled concrete shear wall with construction waste as aggregate were analyzed. A type of isolation device and fabricated construction was presented，the seismic performance of the isolation structure was analyzed under earthquake action and the effectiveness of the isolation device was tested by simulating the ground shaking table test. The results show that the mechanical properties of recycled concrete increase with the addition of polypropylene fiber.The recycled concrete shear wall has higher seismic performance and bearing capacity. The weakness of fabricated construction is at the hole and the joints of wall and column. Under the action of earthquake，the cracks that are at the hole present the X type distribution，the joints of the wall and column almost form penetrating cracks. Under the action of different seismic waves，the vibration of the isolation structure along the direction of height tends to be overall translation，which indicates that the isolation device has a certain effect on the seismic isolation of the structure，but the isolation effect of the isolation device is related to the frequency spectrum characteristics of the input seismic wave. When designing，the right site needs to be chosen.