Experimental Research on Seismic Performance of Prefabricated Concrete Shear Walls with Prefabricated Concrete Infill Walls

In order to study seismic performance of prefabricated concrete shear walls with prefabricated concrete infill walls, a model of 1∶3 scale with two-story prefabricated concrete shear walls and prefabricated concrete infill walls was designed and fabricated. Considering the models with prefabricated concrete infill walls along the two principal axis directions of the structural plane respectively, three sets of seismic waves and eight seismic acceleration peak levels, the dynamic characteristics, damage modes, acceleration responses, displacement responses and strain responses of models excited by different levels of seismic waves were obtained by shaking table tests. The results showed that: 1) excited by fortification earthquakes and rare earthquakes of 8 degrees, the model was severely damaged, and the final failure mode of the model was that concrete at the bottom of the first-floor shear wall peeled off and formed many horizontal through cracks. 2) The model was basically in the elastic state excited by 6-degree earthquakes and fortification earthquakes of 7 degrees. The existence of the prefabricated concrete infill walls increased the lateral stiffness of shear walls and reduced seismic acceleration responses of shear walls. Subjected to the frequent earthquakes of 8 degrees and the rare earquakes of 7 degrees, the elastic-plastic deformation occurred in models gradually, and the effect of prefabricated concrete infill wall gradually decayed. 3) under rare earthquakes below 8 degrees, prefabricated concrete infill walls were of a significant effect increasing lateral stiffness of shear walls; under rare earthquakes of 8 degrees,the model damaged severely, and prefabricated concrete infill walls did not play a basic role.