Shaking table test on precast recycled aggregate concrete frame structure model

A one-fourth scaled precast concrete frame structure model, which was made of recycled aggregate concrete (RAC) with 100% replacement percentage of recycled coarse aggregate, was tested on the shaking table with 3 different seismic wave inputs. Dynamic characteristics such as natural frequency, vibration mode, damping ratio were assessed through white-noise scanning. Acceleration, inter-storey shear force and displacement dynamic response were investigated. Damage phenomenons during the test were described in detail. The test analysis indicates that the natural frequency descends, the damping ratio ascends and the acceleration amplifying factor decreases gradually, the inter-storey shear force increases gradually with the increase of seismic intensity. In the later elasto-plastic stage, the deterioration of joint stiffness is quite rapid and the inter-storey drift is much larger obviously. The inter-storey drift is adopted as the index to evaluate the seismic performance of the precast RAC frame structure, which shows that the precast RAC frame structure has good seismic performance and some measures should be taken to enhance the energy dissipation of the beam-column joint if it is applied to practice.