Experimental Research on Seismic Performance of Storey-Adding Frame Structures

摘要

The seismic behaviors of an integral concreting frame, a light steel storey-adding frame and a storey-adding frame strengthened with carbon fiber reinforced polymer(CFRP)were investigated under low-cycle and repeated load(scale 1∶3). The failure characteristics, hysteretic behavior, rigidity degeneracy, deflection ductility and energy-dissipation capacity of the three specimens were compared. The test results reveal that chemically-bonded rebar technique can meet the requirements of storey-adding engineering. The carrying capacity, the deflec-tion ductility, the energy-dissipating capacity and seismic performance of the light steel storey-adding frame are higher than those of the integral concreting frame, and they are the highest in the storey-adding frame strengthened with CFRP.