Research On Seismic Resilience Of RC Frame Structures C Onsidering The Connection Method Of Infilled Walls

China is located between the two seismic belts of the Eurasian seismic belt and the Pacific seismic belt.Earthquakes are frequent and people’s lives and property are greatly threatened.With the development of economy and society,the theory of seismic design has also been developed rapidly.People have not only satisfied the seismic design theory of seismic safety,but also pursued the seismic functionality based on performance design.In 2021,China issued the first building seismic resilience evaluation standard-’ Building Seismic Resilience Evaluation Standard’(GB/T38591-2020).Infilled wall is the most important non-structural component of RC frame structure.Its engineering cost and damage degree under earthquake are one of the largest among all non-structural components.However,when the dynamic time history analysis of the structure is used to solve the engineering demand parameters at home and abroad,only the infilled wall is reduced to the weight of the beam to maintain the quality consistency of the structure,but the influence of stiffness is ignored.And with the development of social economy,in engineering application,in order to reduce the damage degree of infilled wall,flexible connection infilled wall is more and more widely used.Therefore,in order to study the influence of infilled wall connection mode on the seismic resilience of RC frame structure,this paper evaluates the seismic resilience of empty frame,rigid connection infilled wall frame and flexible connection infilled wall frame under fortification earthquake and rare earthquake.When evaluating the seismic resilience of the structure,the engineering demand parameters of the structure under the action of fortification earthquake and rare earthquake should be obtained first.Therefore,based on the site conditions and fortification intensity requirements of Harbin,this paper sets up a typical RC frame structure-middle school teaching building in PKPM.Then,a frame of the structure is selected,and the empty frame-structure A,rigid connection infilled frame-structure B and flexible connection infilled frame-structure C are established in ABAQUS without considering the infilled wall.In PEER,50 seismic waves were selected based on the response spectrum method.After the second wave selection,8 natural ground motions and 3 artificial ground motions were selected.The selected ground motions were imported into ABAQUS to solve the structural response,and the engineering requirements of the three frame structures were obtained.Parameters.The results show that the rigid connection infilled wall can significantly reduce the structural response,especially the inter-story displacement angle of the structure,and the flexible connection has little effect on the structural response.Finally,the seismic resilience of the structure is evaluated,and the personnel information model and building information model of the building structure are defined.Through the definition of structural personnel information model and building information model,the damage of structural members and non-structural members under earthquake can be judged,and the repair time,repair cost and casualties of the structure can be calculated.The results show that both rigid connection and flexible connection can reduce the repair time and repair cost of the structure,reduce casualties and improve the seismic resilience of the structure.However,the way to improve the seismic resilience of the building is different between the two.The rigid connection mainly improves the seismic resilience of the structure by reducing the inter-story displacement angle of the structure and reducing the damage of the displacement-sensitive components,while the flexible connection mainly improves the seismic resilience of the structure by reducing the damage of the infilled wall.