Mechanical Behavior Of SRC-RC Vertical Hybrid Frame Structure

SRC-RC vertical hybrid structure refers to a new type of structure which is mainly acombination of Steel reinforced concrete structures and concrete structures. SRC-RC verticalhybrid structure take advantage of the respective merits of ordinary concrete structures andsteel reinforced concrete structures. This new architectural form not only can meet betterseismic performance,but also can reduce the cost of the building, which can achieve bettereconomic performance and seismic performance of unity.In this paper, the basic principle, the analysis procedure and the basic function ofPushover analysis method and time history analysis are introduced. Based on8and12floors,a total of9vertical hybrid frame model Pushover analysising and time history analysis, thestudy on the vertical location of the structural transfer story forcing performance, giving thereasonable ratio of the transfer story where the number of floors and structures of the totalnumber of the floors. By analyzing the relationship between bottom shear force and thedisplacement at top of frame,ultimate story displacement angle and distribution of plastichinges of the SRC-RC vertical hybrid frame structure, discussing the seismic performance ofthe SRC-RC vertical hybrid frame structur.The results show that under the same circumstances of the beam and column, the use ofSRC-RC structure can increase the ultimate bearing capacity of the structure of the level of asubstantial over the RC structure. Ratio of the SRC-RC transfer story where the number offloors and structures of the total number of the floors is about1/3, which can effectivelydecrease the adverse effects of vertical stiffness of the structure and can meet the "strongcolumn weak beam" seismic design requirements, before the entire structure damage canappear sufficient plastic hinge to absorb and dissipate seismic energy, so that the structure canwithstand rare earthquake without collapsing. According to the law of development of plastichinges structural members by the Pushover Analysis, it shows that the middle and lowerlayers of the framework’s beam end began to appear plastic hinges in the process of pushover, and the plastic hinges gradually move upwards, due to the central beam forming meansultimately lead to structural damage. Based on comparing the distribution of plastic hinges bystatic and dynamic elastic-plastic analysis, the distribution of plastic hinge in the case ofmultiple earthquakes and rare earthquake under static and dynamic elastic-plastic analysisexists a certain gap,compared with Pushover analysis, the quantitative distribution of thestructural members’ plastic hinges be increased and its development has been furtherstrengthened under dynamic elastic-plastic analysis.