Seismic Analysis Of Composition Frame Structure For Steel Reinforced Concrete Of Tall Building

Section Reinforced Concrete (SRC structure) is also called Steel Reinforced concrete composition structure. It refers to the built-up section by means of members or components such as beam, post, wall and the tube body taking the section as the skeleton and wrapping steel concrete outside. The SRC construction has the characteristic of profound intensity and rigidity, sound senility, shock resistance as well as good fireproof and preservative performances. In the meantime, it solves the unreality of complete adoption of SRC because of the construction costs, constructing difficulty and period of the construction reason etc in view of the state of our country. SRC—RC composition structure has carried out superior structure performance at a lower cost and as a result it will have a vast prospect in our country.This text will transform the original design of SRC column-RC beam frame construction into SRC—RC column, RC beam and whole RC frame structure of equal performance and meanwhile analyze these three kinds of structure from section size, reinforcement quantity and the motive properties under the earthquake. with the SRC—RC column frame construction for key research object, we change RC column into SRC column gradually, calculate flapping type, layer move, layer moves Cape, and the ability composes to composes under the often meet and rare meet earthquake dint function, research the shaped steel ratios' impact on anti- seismic performance and get the reasonable the steel rate scope on basis of composition structure. The research results are as follows:1. Steel Reinforced concrete mixed structure has a relatively good anti- seismic performance; it is between complete SRC post structure and complete RC structure2. The steel ratios at the bottom layer of SRC post shouldn't be less than 6%, and the ratios at the rest layers shouldn't be less than 4%. As for the other posts, they shouldn't be more than 8%, for any more hasn't had the function for consolidation.3. The layers at the bottom of the structure make a big difference on the rigidity of side movement together with itself characteristic,whenonly changes shaped steel ratio in the first floor, period of the structurehas large scale reducing, only changes the steel ratio in the 3rd or the 4th floor, the influence is smaller to the structure.