Analysis Of Seismic Response For Frame-shearwall And Concrete-filled Steel Tubular Slab-column Structure

Compared with frame-shear wall structure, reinforced concrete slab-column- shear wall structure has the advantages of that the space is flexible to divided, it has access to a larger area, but in vertical load and horizontal seismic action, the imbalance bending moment will appear in the vicinity of slab-column connections accompanied by the plastic deformation to lead to punching damage happened. Therefore, the "Code for seismic design of buildings" (GB50011-2001) has the strict restrictions to its building height and the role of the earthquake the slab-column frame to assume, affecting the use of the structure. To address this situation, put forward a frame-shear wall and concrete-filled steel tubular slab-column structure. Through the rational design of the nodes, to simplify the means of the node force, enhance the level of anti-lateral displacement and the overall seismic capacity of the structure.The main research content is to use the finite element analysis and design software EPDA, to set up the analysis model of frame-shear wall and concrete-filled steel tubular slab-column structure. Compared with the earthquake response characteristics of frame-shear wall structure, it is to study the impact of the concrete-filled steel tubular column on the overall seismic response, the distribution of seismic action between the shear wall, frame and concrete-filled steel tubular column, finally to verify the above results using ETABS and have the following conclusions:1) As a new type of structural system, the frame-shear wall and concrete-filled steel tubular slab-column structure has well seismic performance. As a key indicator of high-level design, the story drift is able to meet the requirements of "Code for seismic design of buildings". At the same time, it can greatly reduce the cross- sectional area of columns in the same load.2) All the seismic actions will be assumed by shear walls and edge frameworks, the design of edge frameworks should be strengthened to enhance lateral rigidity of the framework.3) Through the rational design, in the earthquake fortification intensity 8, the structure can be a breakthrough to the restrictions on "Code for seismic design of buildings" regarding building height. Through a series of researches, the results can provide reference data for structural design.