The Seismic Performance Analysis Of The Different Frame-shear Wall Structure Based On IDA

As far as our country is concerned, in order to solve the problem of a largepopulation and shortage of land, Multi-high Building are expanding rapidly in ourcountry, and the frame-shear wall structure system is one of the most commonly usedstructure of high-rise building, which have a large proportion in the urban architecturalstructure. the seismic performance analysis of the structue has great value of applicationto the earthquake prevention project and the earthquake disaster emergency response.First, this paper summarizes the domestic and international current situation aboutthe analysis of seismic vulnerability of structure. Beauce the frame-shear wall structureis lack of information on the actual earthquake damage and the seismic vulnerabilityanalysis, so the IDA-based seismic fragility analysis method is proposed.Secondly, a12-story frame-shear wall structure is used as an example, and thefinite element analysis models of the different thickness of shear wall and bottom storyheight are established in SAP2000. The elastoplastic time history analysis of the modelsis carried out under the strong seismic action. According to analysis results,the paperstudied the change law of inherent period, acceleration of the top of building, thehorizontal displacement and inter-story displacement angle of each floor when thethickness of shear wall and the bottom story height is changed.Then, the incremental dynamic analysis method is used in the typical singleframe-shear wall structure, which is selected from the overall structure. According tothe result of incremental dynamic analysis, this article has carried on the seismicvulnerability analysis of frame-shear wall structure. At the same time, this paperevaluated the seismic performance of the frame-shear wall structure, and the influenceof shear wall thickness and the bottom story height is analyzed for collapse resistance ofstructure.the analysis results show that frame-shear wall structure can meet thefortification goal of no collapsing in the strong earthquake, which is designed in strictaccordance with the current design specification. With the increase of shear wallthickness, the seismic performance of the structure will be enhanced, it will be moredifficult to achieve the damage state. However, when the shear wall thickness reaches acertain degree, the effect of shear wall thickness will be less and less to the probabilityof structure to achieve the damage state. With the increase of bottom story height,Although the seismic performance of the structure will be decreased, it will be moreeasy to reach the failure state. However, when the bottom story height changes between 1-2times standard floor height, we can find that the Collapse Margin Ratio of structuredecrease much.In other words, the ability of anti-collapse of structure will notsignificantly decrease.Finally,the work is summarized and the directions for future work are proposed.