Experimental research on seismic performance of storey-adding frame structures

Abstract

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 deflection 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.

Keywords

storey-adding frame / post-installing rebar technique / pseudo-static test / seismic performance

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