| There are many ways to strengthen the current structure. CFRP reinforced concrete structure technology has been developed rapidly in recent years in China and abroad. The CFRP has the following advantages: light-weight, high-strength, corrosion resistance to fatigue, construction convenient, no additional weight and size. It has become an international hot spot of concrete reinforcement technology.The structural system is steel beam concrete column-free floor. 4 concrete columns are 200mm×250mm rectangular; the center column is a 100mm square steel-concrete. The experiment of the design is researched based on the original structure reinforcement, and the seismic stability of steel-concrete column mechanism is studied. Reinforcement of reinforced concrete columns are sticked with CFRP along the normal section of column; three horizontal bands with CFRP at the end-column are wrapped. The reinforcing effect and its overall strength of structures are improved. The questions are researched as followed:Unreinforced structure is compared with reinforced structure, The seismic performance are observed, so the rationality of reinforcement is verified.Under the load - displacement hysteresis curve and the strain - displacement curve, the indicators are analyzed such as energy dissipation capacity, ductility coefficient and the interlayer angle limits, so this type of structure has better seismic performance.The variations of moment and level reaction force of steel tube-concrete column under the level loads are studied, and control steel columns works, and get to know steel tubular column filled concrete for the slab-column structure has a good stability under the earthquake.
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