Research On Stiffness Matching Of Steel Frame-Steel Reinforced Concrete Lateral Resistance Wall Structure System

The steel frame-steel reinforced concrete lateral resistance wall(SSCW)structure system not only has the advantages of steel frame,but also has the advantages of synchronous installation with steel frame,less wet operation on site,cost saving and so on.Based on a new type of steel frame-prefabricated concrete lateral resistance wall(SPW system)proposed by our research group,this paper proposes a steel frame-steel reinforced concrete lateral resistance wall structure system and studies the stiffness matching of SSCW structure system.The main research contents are as follows:(1)Study on the influencing factors of the initial stiffness of steel frame and lateral resistance wall.Based on the geometric parameters of the experimental model,a simplified model of single-floor and single-span structure is proposed by ABAQUS program.And the model is verified by comparing with the expermental data.Then the variable parameter analysis of the model is carried out to study the influence of the span of the frame beam and the geometric dimension of the lateral force resisting wall on the initial stiffness distribution ratio of the steel frame and lateral resistance wall.The influence of concrete strength,height,thickness,width,ratio of height to width and frame beam span on the initial stiffness of lateral resistance wall is studied,Among them,the span of frame beam and the lateral resistance wall have the most important influence on the initial stiffness of the wall,and the limit value of the aspect ratio of the wall is given through comparison: when the span of frame beam is from 3600 mm to 6600 mm,the aspect ratio of the anti lateral force wall should be less than 2.Finally,the stiffness database is established.The limit value of the ratio of height to width of the wall is given,which provides reasonable suggestions for the future work.(2)Research on stiffness matching design method of multi-storey and high-rise steel frame structure and SSCW structure system.Using SAP2000 program,the method and design steps of building models of multi-storey and high-rise steel frame structures and SSCW structure system,represented by 7-storey and 16-storey structures,are introduced in detail.(3)Seismic response analysis of steel frame structure and SSCW structure system.Using SAP2000 program,the natural vibration period and the previous modes of steel frame structure and SSCW structure system are obtained by modal analysis.When the steel frame structure is joined with the lateral resistance wall,the variation of base shear force,floor displacement angle and structural deformation form of SSCW structural system are obtained by response spectrum method.Using time-history analysis method,the variation laws of floor displacement,floor displacement angle and acceleration of SSCW structure system and steel frame structure are obtained.By comparing the base shear force obtained by response spectrum method and time history analysis method,it is concluded that the response spectrum method is used in elastic analysis.