Experimental Research on Seismic Performance of Precast Columns with Intermediate Connections

A precast column with intermediate connections and a cast-in-place column of the same size were designed and manufactured, and the quasi-static test of the two specimens was conducted. The experimental results showed that the ultimate failure mode of the precast column with intermediate connections was the plastic hinge zone failure at the bottom of the column and the steel failure at the joint connection. The hysteresis curve of the precast column with intermediate connections was full, and the energy dissipation performance was equivalent to that of the cast-in-place column. The initial stiffness of the precast column with intermediate connections was slightly lower than that of the cast-in-place column, and the final stiffness was basically consistent with the cast-in-place column. The ductility coefficient of the precast column with intermediate connections was 3.1, which was 89% of the cast-in-place column, and the ductility performance was weak. When the connection interface did not fail, the seismic performance of the precast column was equivalent to that of the cast-in-place column.