SHAKING TABLE TEST OF ENHANCED RECYCLED AGGREGATE CONCRETE FRAME STRUCTURE

The test is mainly focused on enhanced recycled aggregate concrete. There are two main factors which enhance the performance of recycled aggregate concrete: silica fume and hybrid fiber. The research on the seismic behavior of frame could be done in such way that according to different replacement rate of recycled aggregate the reinforcing materials with different ratio were added to the main parts of frame. The natural frequency,equivalent stiffness,the damping ratio,the vibration mode,the acceleration response and the displacement response etc were analyzed and discussed. The inter-storey deformation was adopted as the index to evaluate the seismic performance of the RAC frame model. The experimental results show that the following points: reinforced materials can significantly inhibit the damage of the RAC frame structure model,reduce earthquake damage of the frame key parts and make up for the deficiency of the ductility of the recycled aggregate concrete. According to research,reinforced materials have good effect on enhancing the aseismic capacity of recycled aggregate concrete frame structures.