Seismic Analysis Of Steel Reinforced Concrete Frame Structure

Mechanics performance for the members of steel reinforced concrete(SRC) structure has been studied in many countries at present. But the research on SRC frame structure system's dynamic performance is still scarce. Based on the reason, this paper uses time-history method to deal with the dynamic seisemic analysis of SRC frame in consideration of the varying of shaped steel ratio. The main contributions in this paper are as follows:1. Based on the current restoring-force model of SRC, this paper analyzes the necessity of using the M-φ-N place frame curve which considers of the varying of axial force when seismic analysis is performed.2. The procedure which can compute the bending moment-curvature curve of SRC members is compiled. By using the procedure, the properties of SRC members that the varying of shaped steel ratio are taken account into are concluded. This paper gives the reasonable range of shaped steel ratio.3. The seismic analysis of SRC frame structure is performed using the finite-element analysis program—ADINA, this paper analyzes the influences to SRC frame structure because of the varying of shaped steel ratio, and then advises the economical and reasonable rang of shaped steel ratio.