Study On Seismic Behavior Of Prefabricated Steel Reinforced Concrete Shear Wall

In recent years,China has promoted the transformation,upgrading and sustainable development of the construction industry by developing green buildings and construction industrialization.The prefabricated buildings have become a hot spot for the development of construction industrialization.The prefabricated steel-reinforced concrete shear wall is closely linked to the two major directions of current research popular prefabricated shear walls and steel composite shear walls,combining section steel skeleton with prefabricated reinforced concrete shear wall,Give full play to the advantages of steel and concrete,member of stiffness,bearing capacity and ductility are dramatically.In order to improve the general assembly shear wall structure,test the seismic performance of the assembly steel reinforced concrete shear wall,the seismic performance of prefabricated steel reinforced concrete shear wall is studied by numerical test.Through the establishment of different steel skeleton forms of fabricated steelreinforced concrete shear wall models,and the low cyclic load tests are carried out by using finite element software to study the suitable form of steel skeleton of prefabricated steel reinforced concrete shear wall.and after the study obtains the suitable skeleton-Xtype skeleton form,the concrete parameters of the fabricated steel reinforced concrete shear wall are studied.To explore the influence of axial compression ratio and steel content ratio on the seismic performance of steel reinforced concrete shear walls with Xframe.Research indicates:(1)Compared with ordinary prefabricated concrete shear walls,the hysteretic curve of prefabricated steel reinforced concrete shear walls is fuller,and the bearing capacity and energy consumption capacity are greatly improved.The built-in steel frame slows down the stiffness attenuation rate of the shear wall members in the later period.Which is beneficial to improve the seismic performance of the structure in the later stage.(2)Comprehensive comparison and analysis of the seismic performance of fabricated steel-reinforced concrete shear walls with different skeleton forms can be found that under the same steel content,the bearing capacity of the X-shaped skeleton has the highest increase,which is twice the bearing capacity of ordinary shear wall specimens;At the same time,the energy consumption capacity is also increased the most,which is 75% higher than that of ordinary assembled shear wall specimens.The overall seismic performance is better,and the applicability of the X-type frame is better than other forms of frame.(3)For the fabricated steel shear wall with X-frame,the increase in axial compression ratio will reduce the energy consumption and deformation capacity of the shear wall specimen,and will accelerate its stiffness degradation;increase the steel content,even It can improve the energy dissipation capacity,bearing capacity and rigidity of the X-frame fabricated steel-reinforced concrete shear wall specimens,but it is more effective to increase the steel content of end columns than to increase the steel content of web members.